Parsley,
Overall your build looks good. Couple things I did notice.
1. The weathering seams to be a bit excessive, just a suggestion, paint your armor a solid color and do a dark wash to show the armors detail. I don't believe their armor is that weathered.
2. Looking closely it seems the cannister is not fully painted. Looks like I can see the resin base material.
3. I would paint the inside of your shin armor towards the knee area, depending on how you stand or move you can see the white of the ABS showing.
4. You seem like you have a slimmer build, can't be sure from the photo but it looks like your thigh armor fits loose on the bottom. I would suggest posting some photos without the cloak.
Overall looking good.