It's an iron artist. This means that basically the artist has most of artistic freedom, delivers pictures fast and has less revisions (at least to my understanding). Usually iron artists are sweet deals money wise as well!!
Oh so I think I get it. Like Patto takes commissions 24/7. You said artistic freedom so they can do anything to character as long as it doesn't hit a red zone?
My new alias is repteil. Sorry about that!!