Anna, you put interfacing on the back of the panel? These are on 100% cotton, already printed, not on tshirt material. Each panel is approx 18" x 16". I am afraid if I were to have them machine quilted it might make them "peel" off because the stitching would be so tight and cover the entire panel. On the other hand if I dont quilt them on the panel it wouldnt hold up as well. Im really confused on how to make them into a quilt. Thanks for your help!! As you can see they are Civil War scenes! The Union panels are at the quilters now..cant wait to get it back!