I made this for a friend, so his mom could make him more tunics that will fit like the ones I made him. Since a lot of people ask me what pattern I use, or how I do my armpit gussets and gores, I figured I should post it here.
The main part that changes based on the person is the width of the four rectangles, which depends on the widest part of the body (chest, belly or hips), divide the measurement by 4, then add 1 1/2 if you have small seam allowances, 2" for large or if you want it to be looser. The smaller rectangles which will become the gores use the same width, but the measurement from neck to waist is subtracted from the total desired length (49-24 = 25). I always use a 4" square armpit gusset. On the sleeve, the length is the measurement from the tip of the shoulder to the back of the hand. You can use the measurement around the upper arm for the width of the sleeve, but I taper them to the width around the wrist, because I like how they fit better.
This is how the pieces will go together.
