DIY Peter Pan collar blouse with long puffy sleeve and button down | Step by step sewing tutorial

Welcome or welcome back to my channel!

In today's tutorial, I'm going to share with you how I made a Peter Pan collar blouse with long puffy sleeve. This blouse will be the perfect item for your fall wardrobe as you can easily mix & match it to create so many different outfits.

So I hope you like it and try it out. Let’s get started!

WHAT YOU’LL NEED

2m of 80% cotton fabric in white color
Pattern paper
Sewing machine
Pins
Scissors
Ruler
Long stick
Zipper
Buttons

MAKING THE PATTERNS

Here’s the pattern for the project. To get a clear understanding of all the measurements needed for the pattern, watch the video from 0:22 to 9:48.

Remember, you can adjust these measurements to fit your own dimensions!

THE BACK BODICE PATTERN

To make the back pattern, draw a straight line cutting the edge horizontally first.
From the first straight line, draw another one 2 cm next to it.
From the end of the second straight line, mark up 7.5 cm, which is half the width of the neck size of the blouse. Then, draw a perpendicular line from that mark. The width of this line will be 3 cm, which is the depth of the neck at the back bodice.
Continue drawing a straight line from the end of this perpendicular line to cut the edge horizontal line.
Connect the mark on the second straight line to this cutting point before making a mark in the middle of the slanted line just created.
Connect this mark to the end of the perpendicular line before making another mark in the middle of the new slanted line.
Connect this mark to the mark on the second straight line and to the end of the third straight line.
Based on this, draw a curved line to create the neckline of the back pattern.
From the end of the second straight line, make another mark 18 cm from it, which is half the shoulder size. Then, draw a perpendicular line from that mark. The width of this line will be 2.6 cm, which is 1/10 of the shoulder size minus 1 cm.
Connect the end of this perpendicular line to the top of the neckline to create the shoulder line for the back bodice.
From the first straight line, draw another one at 21 cm from it. This is the quarter of the bust size plus 1 cm. This will be the bust line of the back bodice.
From the end of this line, mark up 25 cm, which is the quarter of the bust size plus 5 cm. Continue the perpendicular line at the shoulder to cut the bust line at one point.
From the cutting point, mark inside 1.5 cm before connecting it to the end of the shoulder line.
Mark the middle of this new line before connecting it to the mark on the bust line. Keep marking the middle of the new slanted line before connecting it to the second mark on the bust line.
Repeat the process, marking the middle of the new slanted line before connecting it to the first mark on the bust line and the mark on the first slanted line.
Based on this, draw a curved line to create a sleeve line for the back bodice.
From the second straight line, draw another one at 60 cm from it. This is the length from the shoulder to the hip, which is also the length of the blouse.
From the end of this line, mark up 25 cm, which is the quarter of the bust size plus 5 cm. This is the same width used on the bust line, but if it is smaller than the quarter of the hip size, make it bigger.
Connect this mark to the end of the sleeve line to create the side line of the blouse.
Add 1 cm for seam allowance. This pattern should be cut in folded fabric at the edge horizontally.

THE FRONT BODICE PATTERN

Moving to the front bodice pattern, base it on the back bodice pattern just created. Lower the shoulder line by 2 cm first.
From the cutting point between the perpendicular line at the shoulder and the bust line, mark inside 2.5 cm instead of 1.5 cm as done for the back bodice.
Repeat the same process to create a new sleeve line for the front bodice.
From the first straight line, mark down 14 cm on the horizontal line, which is the depth of the front neck.
Connect this mark to the top of the new shoulder line.
Based on this, draw a slightly curved line to create the neckline for the front bodice. This blouse has a little V-neck look, but it can also be made into a round neck by shortening the depth of the front neck.
From the horizontal line, draw another one at 1.5 cm outside the pattern. This is half the width of the button and buttonhole area.
Then, draw another horizontal line at 3 cm from the previous one, which is the width of the button and buttonhole area.
Extend the neckline to the first horizontal line, then draw the opposite line from it to the second horizontal line.
Add 1 cm for seam allowance. Two pieces should be cut using this pattern.

THE COLLAR PATTERN

To make the collar of the blouse, copy the neckline from the front and back bodice.
Deduct 1 cm for seam allowance at the shoulder line, ensuring the shoulder lines of the front and back bodice are the same.
Measure the desired collar width. This collar is made with the same width as the shoulder line, but it can be adjusted to be bigger or smaller.
Draw a curved line parallel to the neckline—this will be the outer collar line.
At the end of the front neckline, which is the inner collar line, mark inside 2 cm, which is the width of the ruffle hem minus 1 cm for seam allowance.
Draw a slanted line from that mark to cut the outer collar line to complete the collar pattern.
This pattern should be cut in folded fabric at the middle of the back collar pattern part.

THE SLEEVE PATTERN

Moving to the sleeve pattern, measure the total width of the sleeve line at the front and back bodice pattern first, ensuring the measurement is taken without seam allowance.
Draw a horizontal line first. Then, draw two more horizontal lines 5 cm away from both sides of the first one, making the width between the two new lines 10 cm. This is the width of the puffy part at the top of the sleeve.
Next, draw a straight line that cuts across the three horizontal lines.
From the cutting point between the straight line and the top horizontal line, mark 13 cm on the horizontal line. This is 1/5 of the bust size minus 3 cm.
From that mark, measure and mark 21 cm on the straight line, which is half of the total width of the sleeve line at the front and back bodice minus 2 cm.
Divide this slanted line into three equal parts and do the same for the other horizontal line.
At the top mark on the first slanted line, draw an outside perpendicular line with a width of 1.5 cm.
At the third part of the slanted line, mark the middle first, then draw an inside perpendicular line with a width of 0.5 cm.
Draw a curved line going through these marks to create the sleeve line for the sleeve pattern.
Do the same for the other side of the horizontal line, but the width of the outside perpendicular line should be 2.5 cm instead of 1.5 cm to create the back sleeve line of the sleeve pattern.
Connect the two top sleeve lines together first, then move it up 3 cm and redraw the top part of the sleeve pattern.
From the top part of the sleeve pattern, mark down 56 cm on the first horizontal line. This is the sleeve length minus 4 cm, which accounts for the curve at the end of the sleeve. Draw a straight line through that mark.
Next, draw two horizontal lines from the two ends of the sleeve line to cut across the straight line, creating the underarm line of the sleeve pattern.
Add 1 cm for seam allowance. Two pieces should be cut using this pattern.