Hey Ardnutz, cool mini you have here! I love your conversion work with the gun and the weathering work is giid also. As for some suggestions, I would say maybe add some more contrast to the metallics and glaze the skin to dull down some of the contrast. Oh yeah, and give the thing a good base! I feel this is letting it down atm.
But I have to say I really like the piece, well done :)
Cheers,
Tom