Nice try Kanogetz. You can also start with using other Photoshop techniques/tools e.g dodge, burn tool. That will give your models nice shades, especially when you're working with 3D cartoon characters.
I really like this in fact; I love TMNT - I think all 90' kids do! can you tell me what is the software that you've used, because on a first glimpse it almost look like a traditional art
-obviously the only rational solution to your problem is suicide -
