sorry those bend lines on the shoulder bells make them look like cardboard. All in all it looks pretty good. Although the battle damage on the chest is a bit too big i.e. the circles of metal around the dents is too much
Wow. Looks good. The center "diamond" may be a little small but that could be from the picture perspective. Are you going for "screen accurate" paint or more custom? For scratch built from metal no less, this is really good. Oh, your knees, you might want to add a flange on the sides so you can install the darts launchers. The collar looks spot on btw.
I think the chest/back armor would be realy awesome if you touched up the paint job a bit. The shoulders and knees could use a little more shapping. The gauntlets are pretty good to. Did you make the helmet too?