i like a 3" cut, folded in half. i sew it on the right side of the quilt with my walking foot using a 1/4 in. seam. then hand sew in down on the back. sometimes with a gift quilt, or one that i know is going to be washed lots, and loved lots i will zig zag it to the back. sewing carefully and straight. makes a nice decorative stitch on the front, when you are done.