I, too, use the sta flo concentrate in a 50/50 mix. Probably wrong, but I starch AND iron the right side of the fabric. I spray the fabric but let it sit for a couple of minutes. And I use steam. I've not had a problem with bumps or flakes. And if I get flakes, oh well, they brush off. The quilt is going to be washed when I'm done anyhow so it's no matter to me. I hear the quilt police roaring down the street now!