Morning Warm Up

To warm up for work this morning I spent about an hour doing hand studies.  I tried to focus on using line weight to describe the light and dark areas, so parts of the had that are in light have a thinner line than the ones in shadow, which helps hint at where the light source is.

Even though I've spent a lot of time studying human anatomy, I still haven't fully grasped (pun?) the structure of the hand.  Practice sessions like this go a long way towards understanding building that knowledge.