I fight, fight and fight some more with this!! I lay the backing layer down and smooth out as best I can. It just doesn't lay absolutely flat no matter how hard I try. The batting I can keep flat and the top is flat. It's that backing that makes me cuss up a storm!! I smooth out one wrinkle only to make 3 more!! Then, of course, when I start quilting I have little puckers in a few places. I'm not fortunate enough to have wall space to hang the pieces while basting so have to use the floor. Does anyone have tips or tricks they'd like to share for this problem?