EDIT - FINAL DESIGN
So the task was to design the Bloodworm Helmet, I looked into something really organic. The original design is very heavy and built with a single piece, and i tried to have something with different parts, with for inspirations stuffs like the facehugger and some creepy insects.
I first did some shapes, trying closed and opens helmets
The most closed helmet gave this organic/invading look i was trying to get, so i rendered some.