For those of you interested in learning "comic book" style digital coloring I have to recommend the training CDs from Brian Haberlain. They're older (PS 5/6) but still applicable and are a great insight into how this is done. He is not a great speaker, but you can gain alot just watching along. http://www.digitalarttutorials.com/
Although targeted toward aspiring comic colorist, the techniques are defintely transferrable to creating textures for 3d applications. There are snippets of each tutorial on the above link.
Vedic, cool sketch. I think you may have to play with effects to pull this look off... look forward to the WIPs on this.
"If you love your job, you'll never work another day in your life."