A-Line Dress Pattern Draft

Front:

A-B = full length + 1/4 inch
A-C = 1/4 chest + 1/2 inch
Square out lines from points A, B, and C.
A-F = half shoulder + 1/4 inch
C-H = 1/4 chest + 1 1/2 inches
B-K = 1/4 chest + 3 1/2 inches (1/4 chest + 6 to 8 inches for women's size)
A-D = 1/12 chest + 1/4 inch (you can also change this according to your taste) 
A-E = 1/12 chest + 1/2 inch (you can also change the depth of the front neck according to your taste)
Shape neck D-E.
Square down from F. Mark I where the squared line crosses H-C. Mark M where the squared line crosses B-K.
F-G = 1/2 inch (1 inch for adult-size dress)
Join G-D.
I-J = 1 inch
Shape armhole G-J-H.
L-K = 3/4 inch (1 inch for women's size)
Shape bottom hemline B-M-L as shown.
Extend B-M-L 1 inch for bottom hemline fold (shown by a dotted line in the pattern).

Back:

A-B = full length + 1/4 inch
A-C = 1/4 chest + 1/2 inch
Square lines from points A, B, and C.
A-F = half shoulder + 1/4 inch
C-H = 1/4 chest + 1 1/2 inches
B-K = 1/4 chest + 3 1/2 inches (1/4 chest + 6 to 8 inches for women's size)
A-D = 1/12 chest + 1/4 inch (you can change this according to your taste)
A-E = 3/4 inch + 1/2 inch (you can change the depth of the back neck according to your taste) 
Shape neck D-E.
Square down from F. Mark I where the squared line crosses H-C. Mark M where the squared line crosses B-K.

F-G = 1/2 inch (1 inch for adult-size dress)
Join G-D.
I-J = 2 1/2 inches

Shape armhole G-J-H.


L-K = 3/4 inch (1 inch for women's size)
Shape bottom hemline B-M-L as shown.
Extend B-M-L 1 inch for bottom hemline fold (shown by a dotted line in the pattern).
E-N = C-P = B-O = 2.5 inches. Join N-P-O for button stand at the back. Cut the back pattern at N-P-O for full opening.

You can also cut out the button placket (2.75-inch width) from another piece of fabric and attach it to ECB. In that case, you have to add a seam allowance of 0.25 inch at ECB. 

Seam allowances to be added to this dress are 0.5 inches at the neck, shoulder, and armhole, 1 inch on the sides, and 1.25 inches or 1.5 inches at the bottom.

I have posted free a A-line dress sewing pattern for kids' sizes 6 to 12 at this link and for sizes 3 to 5 at this link. Hope you may find it helpful. 

Also, you can refer to the Free Sewing Patterns Page at the top of this blog page (under the blog title) to find more free sewing patterns.

Please check the below links to see the tutorial for making this dress:

How to sew an A-line dress

How to draft the Peter pan collar

How to attach the Peter pan collar

How to attach the pocket to the dress