I make my labels either on the computer with printer fabric or on the embroidery machine. I sew it RST to a piece of lightweight fusible interfacing (consider the fusible side as the wrong side), trim the seams with pinking shears, cut a slit in the interfacing and turn the whole thing right side out and iron it onto the quilt back. Then I whip stitch it in place for added security. This makes it easy to turn the label's raw edges evenly to the underside. I have, on occasion, written my name on the quilt backing itself with a pigma pen under the place where I'm going to put the label just in case it would get removed.