I love doing the binding with the flange!! I use 1 1/2" of the flange color and 1 1/4" of the binding color. This ends up at a 2 1/4" binding. If the batting is cut even with the top and back, you shouldn't have a problem. I bring the binding around tight so that the seam, where the flange meets the binding, is just beyond the row of stitching from sewing the binding on the back. Then sew the binding on by machine by sewing in the ditch between the flange and the binding. This should make a line of stitching on the back just below the binding. Use bobbin thread to match the back. I usually get a good miter too. Of course, the flange part may hang over your star points a bit, but since it is not attached, you can kind of see under them. Good luck. Would love to see it! Ann