I have helped and done 4 T-shirts quilts but had my quilter quilt 2 of them. She told me mine worked up the BEST.
When you wash the T's do not use fabric softner...starch and iron them. I use a metal L metal thing and put my shirts
on my cutting pad that fits a T-shirt to insure they are squared and measured GOOD. I stabilize mine again by bordering them in a cotton/polester blend material. The one that was T's only was stabilized by sewing 1/2 seam just
inside all the seams of the blocks and it did a great job. I was VERY careful when handling all of this to not stretch or
pull anything I was going to stitch. 2 I helped with I tacked them and finished them but my other 2 (for my son and one for my husband) my quilter quilted them on her long arm and they turned out beautiful! Hope this helps you and wish I could be there to help you. Hey Catty on here often in chat room makes them for living...ask her any questions..she is a sweetheart!