I have never had good luck with pinning. Always have puckers on the back. I have taped, used binder clips, and anything else I could think of. No luck, then tried spray basting. Spent a long time taping newspaper to the wall and putting it on the floor. Then began to spray a quilt on my design wall. Did a quarter at a time. Wonderful--no overspray on walls or floor. I think I'm in love!!!
Sue