I don't get it either..."4. Attach it to your quilt like regular binding then Zig Zag the strip in place, making sure the corner is mitered properly.
5. Bind the other side and end, the same way. If you happen to leave too much open binding on the quilt, simply sew in another row of Zig Zag." Do you sew around the quilt edge 3 times? What is "open binding?" I guess I am more visual than not.