Idea & ambition:10.
Sculpture: 8.
Paintjob: 5.
Base: 4.
I think if you go back in and establish some gradations in light/shadow, maybe work on developing a complementary color to pick up the yellow, and put a bit more effort into the base, you'll be able to push this project to a higher level. I really like the Cthulhu-tastic theme of your works!