Make a pattern and sew a hooded vest

Step 12 The armholes

Now it's time to address your arm holes. If you need to adjust the arm hole so the shoulder doesn't stick out, now is the time to do it. Put your vest on and make a mark where you want your shoulder to end. You'll need to cut the arm hole within a 1/2" of this mark. Take your time, and ease this cut into the arm hole so it flows nicely.

Next you will need to cut slitss into the fabric so that when you turn the garment out, the seam will lie flat. Depending on your fabric you can cut right up to the fold, just don’t cut the seam itself. Now you want to iron your arm holes so you have a nice crisp line to follow.

Pin your two layers together. Match your liner and outer garments seams together, making sure all the seams at the shoulder and side line up. Make sure both of these seams are open, on both fabrics if you didn't sew them open earlier. This will decrease the bulk of the seam making your garment more comfortable.

Now you are going to sew the arm holes together. This will be a little tricky and probably frustrating. Take your time, adjust the fabric so that you are always sewing in a straight line, even if it is only for an inch or two. Remember a sewing machine, like a vaccum cleaner likes to go in a straight line.