I usually add my quilt labels after I am completely finished with the quilt. Sometimes I stitch it on even though I can see the stitching on the front. Most of the time I cheat and use steam a seam to fuse it to the back. I am not sure I can use a hot iron on a quilt that has polyester batting though. Someone else on here told me I couldn't do this to a fleece backing, so I was wondering about the batting itself-if it would melt. Thank you.