I am using a diagram I found on the web so long ago I can't remember where it came from, but it's so very helpful!:
I have used it before for measurements and scale it really makes a nice shape and size.
I am using the same material as the apron so they can be a matched set and am hand sewing the whole thing like the apron.
I am debating though, whether or not I want to do the ruffled edge. It's a pretty touch and I did cut out the material for it already, just not sure I want to do all the hand work! ;)