The blast shading on the left-side gun is behind the gun, and you seemed very confused on whether you wanted a simple dark line-art, or colored as I see the hand on the right having both which defies the rest of the piece. The shading and lighting such as the finger lines and neck could be sharpened with an eraser.
If all of those were present, it would've been a 4 to 4.5 stars from me