I made a quilt, got a new bed and the quilt wasn't wide enough to cover like I wanted. I made a strip for each side, about 12 inches wide and the length of the quilt, sandwiched it, quilted it to match the other quilting, and bound it. THEN, without removing the binding from the original quilt I stitched in the ditch of the binding of the original quilt to attach the extra piece I had made. It turned out perfectly and wasn't that difficult.