My sewing room is also my bedroom...in the attic...with the walls currently being insulation. So I can't even tack a piece of felt to the wall. My design wall is a piece of 36 by 36 inch felt with 2 skirt hangers over my wardrobe. I have another piece of felt I sometimes safety pin to it to make it longer or wider, but it works for me and is much better than nothing at all! I like the idea of putting flannel or felt on the doors so it will fold out of the way if needed