I spray table runners and baby sized quilts. I do this on top of a tall double bed. The old, awful comforter on that bed is perfect, but I do have an old piece of cardboard that I store under the bed and place under the project. I layer backing and batting - then fold the batting back halfway. Spray the backing, smooth down the batting, then do the same for the other side. Then put the top on the batting then fold back halfway, spray half, smooth down, repeat. I also use a short spray