The overall helmet looks incredible, however my concern is that it has a soldier/warrior theme. Think of Spartans as an example, Nyx by theme is something of a puppet master, the type of character to win without fighting. The central part of the helmet should change in my view. Maybe scrap the middle section and rebuild around the side ornaments. My suggestions are the following:


- Let the face (eyes in particular) be more open and build up towards a top horn-like ornament (except flat or it would look next levels of dumb with an actual horn)

- Go for the classic L fin with some details to pull everything together and make it flow nicely

- Raise the fins to point more towards the air and not so spread (essentially sharpen and smoothly point upwards) and maybe add some kind of energy on the sides of the fins or around the lower sides of the middle section (above her ears essentially)



Hoping my feedback could be of use.