I had a backing out of plaid flannel that was perfect for my son's quilt. Sandwiched it and had about a 12 x 8 area that was short, but there was a large piece that was excess on the other end. I quilted 3/4 of the quilt so that I could cut off the excess piece up to the stitching to make sure I had enough. When I went to attach it to the corner, wouldn't you know it, the plaid pattern weave was not square, therefore did not match. I had so many seams in that corner from matching the threads with some of the patches only 1.5 inches wide. There is a lot of waste when you match irregular plaids. There was just enough to finish the quilt. I had maybe a 2 x 8 inch strip left. I just got the quilt out as I was going to show a picture, but had a hard time finding the seams, so guess I did a good enough job. Boy, did I learn a lesson on that one!!