Excellent!
Before you submit any 501st pictures please remove the hand cuffs, they're not accepted as an accessory.
Quick glance, suggestions...
1) Paint the Thermal Detonator screws black. L2 suggested, L3 required
2) Try to keep the biceps aligned. You may need to add a connecting strap to the shoulder bell if you haven't done so already. L2 & L3 suggested
3) Minimal to no gap between the kidney and back plate. L3 & L3 suggested (your's aren't that bad)
4) Foam behind the lower left thigh to prevent sniper knee contact. L2 suggestion
5) Install lower bell straps, to prevent them from flaring out. If you haven't done so already,
6) Extend the frown, L3 required
7) Replace Hovi screens, L3 highly suggested
8) Hard to tell with these image but you may want to remove more eye socket return edge