I have 2 queen size quilts and 1 double bed size all waiting for bindings, but I chose to do the small wallhanging instead. It is one of the crooked cobblestone quilts. I use a 3/8" seam for my binding which is the correct seam width for 2 1/2" strips. There is a formula to figure how wide your double binding strips need to be cut. If you know the seam width you want to sew, multiply it by 6 and add 1/4" for the thickness of the quilt. Unfortunately a lot of people cut their bindings 2 1/2" and then sew a 1/4" seam. This either makes a wide flap to pull around to the back or 'empty binding' if they match the folded edge to the stitching line on the back. I always do a test sewing for about 6" with a long stitch that I can pull out. If the binding fabric is a little heavier it might take a scant 3/8" seam where a lighter weight fabric might need the full 3/8".
