Well, now that I mostly survived Elsie's class, I am almost done with my first tank. Yea!

In class, I did not finish things, so here I am at home trying to follow The Art of Kiltmaking. In class, I finished the 'steeking', and started to apply the canvas. Well, now the canvas is in, and the front apron is done. The under apron is mostly done. I happen to have a Tewksbury box pleat kilt to compare things to (not the same of course, but the aprons should be similar).

Looking at the box pleat kilt, I see that the under apron, at the folded edge down at the selvage, has been turned up to make a small dart shape hem. Here is a picture of the back side of the under apron and the mini hem:


I do not see this mini hem in the instructions in the book. Am I missing something, or is this hem optional? Is the hem a good idea?