I appreciate that you mentioned the general time frame you had to work on it. I rarely hear Zbrush artists comment on how long it took them to make a given piece, and I tend to worry that my own workflow isn't fast enough, as a result.
Two lighting colors and some great textures. Whatever craft requires this wear, it must really be something because that is a space suit, or a deep diving suit. While minimal in itself the craft it mates to is complexity in droves. Personally, it is so hermetic its creepy. An aerial hero could project no aura or personality beyond its claustrophobic face. It might be very cool for a antagonist to wear, something that is both functional and punishing.