Could you post the assets/base graphics rather than a screenshot of the whole thing with filters and all? This is hard to edit.
Anyway, two points:
-I can't really infer a lightsource.
-The edge of the roof looks unfinished/inconsistent.
-The trees and moon look like they're blurred even before in-engine effects.
Also, if you are going to use effects on top of pixel art (and there isn't much reason not to) maybe don't use any that make a screenshot look like bad video compression. I honestly thought that this was a movie still at first. I'm reffering to the rather inconsistent blocky air/clouds.