Take a break, do a different type of picture and come back later and do your version of the picture. I have seen folks whose artwork is way better than mine but you know what? I don't care. Not going to throw out my software, delete my pictures and give up doing 3d. Don't care that my stuff looks like dog spit compared to hobbit or Gevidal or David Ho or other 3d luminaries. Don't even care that it does not measure up to Mark Ryden, Skot Olsen or even Shag's stuff either. If you love doing 3d, then you should not care about how good everyone else is. In almost everything, there are people that are better, worse and on the same level. Further up you go, you are still looking at someone's back either living or dead.