It looks good so far, reminds me a lot of the adamantium set I bought from ConCon, which is good in my opinion. I think you should change the circles on the sides of the knee joints, maybe make a different symbol or something instead of the light blue circles.
Here are some other things I would consider changing or fixing:
http://imgur.com/9mr0CKm
On the stomach, there is those little white parts, it doesn't look too good, I would reccomend just making that part adamantium as well. On the knees, just needs to be lined up a bit, I'm sure you are planning on doing that.