Concept Art and Illustration Blog
Nice colors! Especially in the top. the guy feels a bit detatched with all the blue around him. i'd try adding something he could stand on and maybe turn him 180º to drive the eyes into the supercool landscape! :)
I like the shapes of the mountains and how the small piece on top is about to detach. The character looks a bit cartoony and so it changes the overall style of the image, but maybe this was your intention.