Finishing up image:
Check composition – Does this piece follow rule of thirds?
Flip Check, Increase constrast – Does this still look good?
30 light 70 shadow
5-10 shadow to pull out sub-forms
1-5 light – to highlight
Edges softer in shadow
Sharper in light
Notes: Craig Mullins tutorial. http://www.gfxartist.com/features/tutorials/7840