Our quilt guild stresses adding a label. as our quilts are an ever-lasting tribute to us as individuals, and as quilters.
Just get a Pigma Pen at Wal-Mart or a quilt shop, Hobby Lobby, ect. You can write right on the fabric, or make a label out of a light-colored material.
Write your name, date made, and maybe a short washing instructions.
I bought labels from Keepsake Quilting; not expensive, and you get a lot for the money. They have different designs.
Then just sew the label on by hand.
Mariah.