I decided to punch out a practice drawing in photoshop. It's always refreshing to look learn and draw. Sometimes doing your own thing can get stale without these basics. If you're in a rut, get out and draw, or you can just paint from a photo like I did. However, when I'm on BART or waiting somewhere with nothing better to do you can bet I have my sketchpad out.
For this picture I was mostly working on lighting, and drawing a tilted head in photoshop.