I usually use a piece of fabric from the quilt top to make my label.
Using a marking pencil or pen (the kind that will wash away) I write who the quilt is going to; my name the month and year it was completed and where I live. Then embroidery over that. The labels are then hand sewen on the quilt. Wish my Mother would have done that on her quilts. I've created labels for her quilts, but it's not the same.