Hmm this took a lot of your time! Maybe you should try to “polish” it after some time pass. You’ll look at this with a fresh view and quickly will finish to the end.
I must say you can place it in many famous CG places like cgsociety, render.ru and others. But maybe it’s better after full completion.
Another idea! You can make it in cold tones - blue, bluish to dark desaturated violet (probably). And add some fog. This will be a remake. Mostly people “eat this”! 