Hi Normabeth - about 1-1/2yrs ago, I did 8 t-shirt quilts. I just used a lightweight fusible interfacing (from Joanns), if you go too heavy...make the quilt stiff. I have seen tshirt quilts quilted edge to edge but some people (incluing me) avoided the designs on the shirts, my thread kept breaking. Good luck and have fun, that is really nice of you to do these.