Originally Posted by
brandeesmom
I would use a thin iron on interfacing on the backs of the T shirts so the fabric will no longer be stretchy, then you can work with them like regular cotton fabric.
This is exactly what I use to do. I still have a bolt of the featherweight Pellon fusible interfacing that I bought at JAF with a coupon of course. You may want to look at other t-shirt design on QB to get suggestion on your layout. Good Luck !