ive had adobe photoshop for quite some time now. i started off with cs3 and upgraded to cs5 recently. unfortunately i have no hard experience with painting in photoshop. i try to stay away from the digital look and try to keep it looking traditional; this is where the challenge lies. in order to get a natural look you need to experiment with custom brushes. i have yet to find a custom brush that closely represents a natural hair bristle brush anyways, practice makes perfect and here is an honest try. i did this painting in an hour. i feel its good to time yourself so you try to focus on the big shapes and values.