Invite a few art historical masters into your classroom! Derive inspiration from classical portrait paintings. Raphael's La Infanta Margarita or Diego Velaquez's Portrait of Baldassare Castiglione, as you explore the idea of self-portraiture with your students. A closer look at these works will reveal mathematical relationships and proper proportions that will inform your students as they render themselves. Demonstrate how to use your fingers as measuring tools and let your imaginations soar!