Clara, I sign my label with "wrap yourself in love" and my name. I've included why the quilt was made, ie graduation, birth, etc and the date the quilt was given. I've read that some quilters also include washing instructions, which I usually include on the bag the quilt is given in. Basically, you can include anything you like on the label.
Have fun!
WandaM envious of Ricky's 75 degree weather