I label every one of the quilts I create, even those that I keep for myself.
I also take picture of each one and when I have it developed I have two prints made, one for my album and the other to use on a thank you note that I create.
If I print a label, I save the "test" paper copy and insert that "label" with the picture.
I probably should keep swatches of the fabric, but I don't, yet.