I just saw a demo of this somewhere this week. She used 4 matching panels and a plain backing fabric (flannel I think.) Be sure to line up the panels exactly so the same pattern comes thru on all layers. (Put a pin thru all layers at the exact same point on the panel and pin. Do this in several places so that the pattern stays secure.) When cutting be sure you are only cutting the panels and not the backing. It give so much depth that you would not get by using just one or two panels. I want to do this soon as I collect/buy 4 of the same panel.