So much depends on the shirts. I made one that included shirts 'from the ages'. These were sized from smallish kids thru high school team shirts. Once they were cut out (and backed), I just had the keep playing with a layout until it felt right. I used a couple of the off spaces for small blocks of fabrics and logos that were memorable for this person. Trying to sash out some of the small sizes would have just looked odd. I have one coming up that is going to be all the same size band/concert shirts. I plan on sashing to make them all the same size (they should all be within an inch of each other. It truly depends of the shirts you are given to work with.