Looks like a nice little scene youve got going.
One thing that I would suggest is to bevel some of the edges of the robot as its looking a little sharp in some places.
I think he looks better now, but i'm not really sure what look your after, if you want him to look mean then the overall design of the robot dosent really suit a mean looking one if that makes sense, as he looks more of a "worker robot" so to speak.
"No pressure, no diamonds" Thomas Carlyle