Ur very talented, they're all nicely put together but I think they lack the practicality typical of the game's design. These armors are for gunfire skirmishes rather than melee based confrontation. So you would expect to see much mor smooth/angular plating rather than spikes and ridges. Also, alot of the more valuable loot is hand-me-down type of stuff that has been modded from generation to generation, as such its not at all out of the question for exterior pieces of an armor set to conflict directly with the core design (food for thought that might g7ve you a little more freedom). Also, you might try to show more wear and tear. Just some cc from someone with way less talent than ur showing with this concept art.