I was talking about people like this, if you are a teacher of course you're going to be able to make good tutorials. http://www.turbosquid.com/3d-models/gto-judge-3d-model/632467 http://www.youtube.com/watch?feature=related&v=tc72cNLuoYo&feature=related or some of the indy iphone artists. if you skills are at a hire-able…
In my personal opinion, selling art assets is a sucker's bet. You're basically doing the work for free and hoping that nobody will make copies of it after the sale and share it around. Then, in order to attempt to maintain control, you have to hunt down and sue everyone who infringes your copyright, which is an expensive…