An artist signs their paintings so a quilter should sign their quilts. It doesn't have to be a fancy label. You can often buy pre-printed label panels in a variety of designs. I then use my Pigma Pen to fill in the appropriate information, iron it to set the ink and back it with lightweight stabilizer to encase the edges and then top stitch it by machine into the bottom corner where an artist would sign a painting. Most of my quilt buddies stitch their labels on the back but I put mine on the front, lower left corner!