Great job! I like your use of color via a limited color palette. It really sets the tone I feel. I do have one critique of sorts and its the person. It just might be me (probably is) but when I look at it I feel as if its body is facing one way while the rest of them is facing the other way. I'm not 100% sure if they are supposed to be looking at the monster in the sky or away from it due to the angles of the arms, and his right(our left) leg and how its drawn looks, the part not in shadow looks like the back of someone. Anyway, other that that issue (maybe I'm an idiot), its overall great!
Can't wait to see more from you!