That was a really good suggestion for learning maybe I'll try another one at some point. If I can think of a good theme. Or maybe just random doodle studies.
@Kelheor I think since the hands have really hot midtones, lower saturated warm colors help the base color consistency. To me it reads as strong light-source like a morning sunrise. I think cool color shadows might push it towards abstract territory. Like a Shepard Fairey peice.