Steampunk Dark Phoenix
Tholins posted a gallery of her Steampunk Dark Phoenix costume over on Imgur recently. She got this costume done just in time for Balticon 2015, and her boyfriend talked her into doing the masquerade.
There is a staggering amount of information that goes along with her gallery. It’s almost along the lines of a good tutorial (too much info to include here in this post), because she talks about the types of material she used for each piece.