I did this sketch in conte crayon, with the need for some experience in learning more about the Masters' composition and portrait choices of head angles. Titian had a way with head movement that made it look so animated and lovely. I did a similar sketch back in my college days, when I was taking a clay sculpting class. The sculpture bust came out beautifully, but the kiln firing was a disaster! I obviously didn't hollow out the piece enough, and the ensuing explosion almost got me expelled. All that remained of that lovely face was a nose. I have since abandoned the use of clay, for the safety of others. I had to promise my professor never to try it again!