It's nice but you should really refine that focal point more. I'm just asssuming that thing in the middle is a human since I can't tell from it's shape, lightning is really awkward aswell which doesn't help at all, light source in the center background for some reason creates a weird outline on one side and not on the other.
In short, if you want to make this sketch a lot better with little effort - make that human figure less blurry and more defined. Having everything blurry is a bad idea.