Ways to Sign Your Paintings
the secret of painting such a picture in the reader's mind is to take some familiar figure his mind can readily grasp, add one point of interest here, another there, and so on until you have built a complete word picture of what you have to offer. It is like building a house.
Robert Collier • The Robert Collier Letter Book
Since artist varnish is meant to be removed in the future when it is dirty and a new coat applied, it is helpful to write in permanent marker on the back edge, which varnish you used. The person cleaning the painting in the future will thank you.