I think your style of robotic may looks better if you put some outlines in the middle of the plates, will give deepth effect too.
Try to raise the visor a bit and will be good.
I like the colour theme, and the back mapping looks pretty nice!
I'm gonna have to agree with him ^^^ the eyes/ visor do look a bit to low and also in the back of the head the platting looks a little sloppy and there are to Many plates the head looks like it's supposed to be "simple" but there you have lots of small prices
please dont add circuit boards
your design is nice, but unoriginal
i dislike how low the face mask is and most of your lines aren't sharp enough
more depth to plating