This is an interesting subject. I know I've seen a lot of traditional artists doing this sort of thing. For instance at anime conventions they would sell color copies of their works in the "artist's Ghetto" (Old term generally replaced with artist's alley these days) and taking requests for custom pics. Also in the RPG gaming community people will sometimes pay to have an artist create a graphic representation of their character on paper. I think somethinhg like that would be well suited to Poser.