I bought exactly the right amount of fabric for the ten shirts. That's more good luck than good judgement, I have to say. Luckily most of the shirts were small sizes so I could fit the back and front pattern pieces next to each other across the fabric. These last two shirts are large, so I had to put the pieces sequentially, which uses up the roll of fabric very rapidly! I still have to iron these two, but really the job is done. Oh, and after 45 buttonholes, I think I have that process down pat, if nothing else.