I can barely even tell it's a person, let alone holding two guns...Is it a person? It looks like some kind of bug-man (after zooming in four or five times as it's unreadable)
whats with the shading on his stomach...does he have a ball for a stomach?
And the colors...oh my.
Why are you working against such a saturated background, anyways?
Go practice pixelating references, you should be able to get a better grasp of colors then.
Also, the sprite is so small, I don't know why your trying to shade it so much, it just makes it completely unrecognizable...
Is everyone supposed to be all super midgetey?
Anyways, good luck, I think you need to go practice some general art.