First the things i like:
The maschine gun got good details,
the belt got a nice schadows
what i am missing is a workout of claws and fangs for example with a bonewhite color washed with some mud ink
the skintone of the gunner need to be outstanding that means try another color so the gunner will be more eyecatching also the warts looks better if you use another color your bluetone is a little bit to flamboyant for my flavour .
But its good table top quality if you have questions contakt me