Here is what I discovered just yesterday..........505 quilting spray will adhere flannel to a door or wall.I covered the back of my door with the same flannel as my design wall. I can use it for smaller projects . The adhesive washes away easily if you remove the flannel!!I sprayed the back of the door, then smoothed the flannel in place.I had to lift it in a few places, and it stuck back down easily!!!
Ditter