Look at 'angiequilts' blog site. I' m sure she has a tutorial on making this binding. This one the seam joining the two pieces are pressed towards the smallest area and they make a padding filling in the flange area. Some of the ladies tack in the ditch because they find they can't sew exactly in the ditch and cover the stitches under the flange. I have also seen a YouTube where 1inch and2inch strips joined, seams pressed open and then folded in half. Put onto the quilt in usual way BUT sewing on back first the pulling over and stitching. I am sure you can think of other ways. I often do a binding which is shown as a different colour each side.