Well, there's gonna be more to the picture. This is just the character that will be in the final piece. The shoes are supposed to be facing toward the back a bit, while the head is facing forward and the torso is facing the side, so he's like twisting a lot. I tend to do extreme poses like this a lot for some reason :<
An I agree, the left foot (the one that's further away) should be a bit smaller.
This is the gun I based it off of:
