I've done it that way, and also I've taped the backing down to the table, lay the batting on top to center it, fold it back and spray the batting, then smooth it out. Fold back the other half and do the same. Then lay the top out and do the same, fold it back and spray the batting and smooth the top over it. I do usually pin around the edges every foot or so. I don't have a sewing room, so mine gets handed a lot more than some people's quilts do. It usually sticks pretty well. Occasionally, I will respray just the edges if they need it.