I would recommend to use higher resolution for your works, I don't really see point to put so much time into a project, when is pixelated right on - for example I have a 24" LED monitor and it looks rather bad.
Also, in the case that this is a parody I would say somehow ok, but if not, I really recommend also study a bit human/armor proportions, on many places the armor looks like bended and hard to imagine that a superior metal armor would do that.