Check my gallery: http://inenarrable.deviantart.com/gallery/
Contact me: http://firstname.lastname@example.org
1 Character: $20
+ Extra character: $15
+ Simple background: $10
+ Complicated background: $15-$25
+ Other stuff: negotiable
Send me an email with your idea for the picture, and all the information needed (character info, poses, references, etc).
If you have any question we can clear it.
We agree on the price and you transfer the payment (Paypal).
I start working with all the motivation in the world.
I deliver you the picture by email once I finish it. And I publish it unless the client states the opposite.