What an amazing exploration of your mind! I hope it let you stay sane!!
It's an exceptional piece of imaginary detail .... where, how, did you even start the physical drawing never mind the concept?
It's such a personal piece, I wouldn't a) want to part with it or b) know where to start with value.
If nothing else, maybe work on the time taken, then set a reserve price and see what offers come.
Sorry, I should have started with 'Welcome to the forum'! .. and ... do please post any more works when you make them!
I've spent about 45 mins trying to decipher parts and couldn't read all the border script!