I made a design wall with a large flannel backed table cloth which I purchased at Wal-Mart. Using the 3M hooks that are removable without damage on your walls and a cafe rod that measured the width of the table cloth and clip rings that go with the cafe rod.
Hang the hooks up at the appropriate distance clip the table cloth with rings slide onto rod and hang. The quilt pieces cling very well to the flannel. One nice thing about this approach is, you can also use the ring clips on a finished quilt or wall hanging and hang up over the flannel wall when you want to show off your space.
Happy quilting
Severna