How to make flat collars, roll collars, stand collars, and shawl collars

🧩 Understanding Collars

Collars seem like a small detail, but they do a lot of heavy lifting in a garment. They frame your face, control how formal or casual something feels, and can completely change the personality of a shirt, dress, or jacket. Once you really understand collars, you stop just “following patterns” and start designing.

The Basic Parts of Any Collar

Every collar is a different way of combining these pieces — or leaving some of them out.

🧵 Interfacing Guide by Collar Type

Choosing the right interfacing is one of the most important decisions in collar construction. The wrong weight makes a collar either limp and shapeless or stiff and uncomfortable. Here’s what works best for each collar type:

📏 Turn of Cloth: Explained in Depth

Turn of cloth is one of the most important — and most misunderstood — concepts in collar construction. Understanding it is the difference between a collar that looks professional and one that always seems slightly off.

What Is Turn of Cloth?

When two layers of fabric are sewn together and then turned right side out, the outer layer has to travel a slightly longer distance around the edge than the inner layer. This means the outer layer needs to be slightly larger than the inner layer, or it will pull the inner layer to the outside — making the under collar visible from the front.

Why It Matters

• Without turn of cloth: the under collar peeks out along the outer edge of the collar, making it look unfinished
• With turn of cloth: the seam rolls to the inside and stays hidden, giving the collar a clean, professional edge
• The thicker the fabric, the more turn of cloth is needed — heavy wool needs more than lightweight cotton

How to Apply It

• When drafting: Make the top collar pattern piece ⅛” larger than the under collar on all outer edges. This extra length wraps around the edge and keeps the seam hidden.
• When sewing: After sewing the collar layers together and turning right side out, roll the seam slightly toward the under collar side before pressing. This manually positions the seam on the inside.
• When pressing: Press the collar with the seam rolled to the inside. Use a tailor’s ham or rolled towel to support the collar’s shape while pressing. Let it cool completely before moving.

Flat collars sit completely flat on your shoulders — no standing up, no folding over. Soft, classic, and often a little nostalgic.

How to Draft a Flat Collar

1. 1
   Take your bodice pattern and trace the neckline
2. 2
   Decide how wide you want the collar to be
3. 3
   Draw a second line outside the neckline, following its curve
4. 4
   Shape the outer edge — round, pointed, scalloped, whatever you like
5. 5
   Add seam allowance

Sewing a Flat Collar

1. 1
   Interface the under collar
2. 2
   Sew top and under collar right sides together around the outside edge
3. 3
   Clip curves, trim bulk, turn right side out
4. 4
   Press carefully, rolling the seam to the under collar side
5. 5
   Attach collar to neckline
6. 6
   Finish inside with facing or bias tape

Roll collars are meant to fold over themselves — that fold is called the roll line. They can have a stand, or not, depending on the style.

Drafting a Simple Roll Collar (No Stand)

1. 1
   Trace the neckline
2. 2
   Decide how tall the collar should be
3. 3
   Draw the collar shape upward from the neckline
4. 4
   Mark where you want it to fold — that’s the roll line
5. 5
   Make the top collar slightly bigger than the under collar — this lets it roll smoothly instead of pulling

Sewing a Roll Collar

1. 1
   Interface under collar and stand
2. 2
   Sew collar layers together
3. 3
   Sew stand layers together with collar sandwiched inside
4. 4
   Attach stand to neckline
5. 5
   Press and topstitch if desired

Stand collars don’t fold at all — they just stand up around your neck. They feel modern, minimal, and sometimes formal.

Drafting a Stand Collar

1. 1
   Measure your neckline seam
2. 2
   Draw a rectangle: Length = neckline • Height = how tall you want it
3. 3
   Curve the bottom edge slightly
4. 4
   Shape the top edge if you like
5. 5
   Add seam allowance

Sewing a Stand Collar

1. 1
   Interface under collar
2. 2
   Sew layers together along top and short sides
3. 3
   Turn and press
4. 4
   Sew open edge to neckline
5. 5
   Finish inside edge neatly

Shawl collars are one continuous curve from front opening into the collar — no notch, no break. Smooth, dramatic, and very elegant.

Drafting a Shawl Collar

1. 1
   Start with front bodice pattern
2. 2
   Extend the neckline outward to form collar shape
3. 3
   Draw the outer edge of the shawl collar
4. 4
   Mark the roll line
5. 5
   Add turn-of-cloth to top collar area
6. 6
   Draft matching facing

Sewing a Shawl Collar

1. 1
   Interface facing/collar
2. 2
   Sew facing to garment
3. 3
   Clip curves carefully
4. 4
   Turn and press
5. 5
   Steam the roll line into shape

🔍 Troubleshooting Common Collar Problems

Collars require precision at every step. Here’s how to diagnose and fix the most common issues:

• Under collar is peeking out along the outer edge: Turn of cloth wasn’t applied. The top collar needs to be slightly larger than the under collar so the seam rolls to the inside. Re-press the collar, manually rolling the seam toward the under collar side. For future collars, cut the top collar ⅛” larger on all outer edges.
• Flat collar won’t lie flat on the shoulder: The inner curve of the collar doesn’t match the neckline curve exactly. The collar’s inner edge must be traced directly from the garment’s neckline seam — not estimated. Re-draft the collar using the actual neckline as your template.
• Collar is twisting or sitting off-center at the neckline: The collar wasn’t matched to the neckline at the correct reference points before sewing. Always match the center back of the collar to the center back of the neckline, and the collar ends to the center front marks. Pin at these points first, then distribute evenly.
• Stand collar is collapsing or folding over: The interfacing is too light for the collar height and fabric weight. Re-interface with a heavier fusible woven. For tall stand collars (2”+), consider using a sew-in canvas interfacing for maximum support.
• Roll collar has a visible crease instead of a smooth roll line: The collar was pressed flat instead of shaped over a tailor’s ham. The roll line needs to be steamed and shaped over a curved surface — a ham or a rolled towel — so it curves naturally rather than folding sharply.
• Shawl collar is gaping away from the chest: The roll line wasn’t steamed and shaped correctly, or the interfacing stops too far from the roll line. Interface right up to (but not past) the roll line, and steam the collar firmly over a ham, holding the roll line in position until it cools.
• Collar points are rounded instead of sharp: The seam allowance wasn’t trimmed close enough to the point before turning, or the point wasn’t pushed out fully. Trim the seam allowance to ⅛” at the point, cut diagonally across the very tip, and use a point turner to push the corner out from the inside.
• Collar is puckering at the neckline seam: The collar was eased unevenly onto the neckline, or the curves weren’t clipped before attaching. Clip the neckline seam allowance every ½” on curves so it can spread and lie flat. Distribute any ease evenly and baste before final stitching.

🌟 Practice Exercise: The Collar Sampler

Collars are one of the most skill-building techniques in garment sewing. Practicing all four types on scrap fabric before working on a real garment means your finished garment gets your best work — not your learning curve.

What You’ll Need

• Medium-weight cotton fabric scraps (at least 18” × 24” total)
• Lightweight and medium-weight fusible interfacing
• A simple neckline template (trace from any basic bodice pattern or draw a gentle curve 14” long)
• Thread, pins, iron, tailor’s ham or rolled towel, and sewing machine

Exercise A: Flat Collar (Peter Pan Style)

1. 1
   Trace your neckline template. Draw a collar 2.5” wide following the curve, with a rounded outer edge. Add ⅛” seam allowance. Cut two pieces.
2. 2
   Fuse lightweight interfacing to the wrong side of one piece (under collar). Sew both pieces right sides together around the outer edge. Clip curves every ½”.
3. 3
   Turn right side out. Roll the seam to the under collar side and press flat. Check that no under collar is visible from the front.
4. 4
   Baste the inner edge to a scrap of fabric cut with the same neckline curve. Check that the collar lies completely flat with no lifting or puckering.

Exercise B: Stand Collar (Mandarin Style)

1. 1
   Cut a rectangle 14” long × 4” tall. Curve the bottom edge slightly. Cut two pieces. Fuse medium interfacing to one piece.
2. 2
   Sew both pieces right sides together along the top and short ends. Turn, press, and attach the open edge to your neckline template scrap.
3. 3
   Stand the collar upright and check that it holds its shape without collapsing. If it folds over, the interfacing is too light — note this for future reference.

Exercise C: Roll Collar (Shirt Style)

1. 1
   Cut two collar pieces — make the top collar ⅛” larger on all outer edges than the under collar. Interface the under collar with medium fusible.
2. 2
   Sew together, turn, and press — rolling the seam to the under collar side. Mark the roll line with a chalk line across the collar.
3. 3
   Fold the collar along the roll line over a tailor’s ham. Steam firmly and hold until cool. The collar should roll smoothly — not crease sharply.

Exercise D: Shawl Collar

1. 1
   Draft a simple shawl collar shape — a long curved piece that extends from a center back point down both sides. Cut two pieces (collar and facing).
2. 2
   Interface the facing piece up to the roll line only. Sew collar and facing right sides together around the outer edge. Clip curves, turn, and press.
3. 3
   Steam the roll line over a ham, shaping the collar so it curves smoothly. Check that it lies flat against a “chest” surface (a folded towel works) without gaping.

🌟 Pro Tricks for Professional-Looking Collars

• Turn of Cloth: Top collar must be slightly bigger than under collar — otherwise the under collar will peek out
• Steam is your best friend: Collars need shaping — steam over a tailor’s ham and let cool completely before moving
• Clip, Grade & Trim: Clip curves, notch outward curves, grade seam layers to reduce bulk