Willow, here's something that happened to me. I made lovely placemats. When I washed them they puffed so nice (that kind of puffy would have been lovely for a whole quilt). However they became puffy in all the wrong places and a glass wouldn't stand level on them. Had to put glasses and coffee cups up above the placemat on a solid surface. Something old or tried and true in the batting part would have been better (as has been suggested).