It has a comic book feel to it and rather envy how well the colors work together. But the line art is a bit wonky and perspective is strange.
the forced perspective on the leg feels out of place from the whole body, making it look like a huge leg.
and the hand with the handgun is a bit stubby looking. forearm seems a bit fatter, hand looks smaller, and the perspective of the gun and hand is...strange to say the least.
that's what I noticed so far. So yea, keep at it!