Art - 2D Painting in photoshop

A while back I mentioned how I learned about natural brushes 2 in photoshop. Here is a drawing I'm working on that pretty much exclusively uses those brushes. I am really enjoying how natural they work and my whole way of drawing has changed now. I've only got 2 hours or so in this, and it's pretty high res, around 3000 pixels or so, it would have taken me 3x as long to get this far with the old crappy brushes I used to use.

Anyhow, I love painting people in photoshop. I'm thinking of charging to do this in the near future after I get some nice ones done and printed off in my gallery at the office I have planned.