Eyewear Cardboard model and progression

Hello! Simple update. My eyewear is mirror based and plays off of vision.  rather than obstructing vision, my eyewear increases peripheral vision with a centralized mirror. Im still in need of said mirror but I do have a minimalist cardboard model to show you.

3 layers of carboard.
That middle unicorn-looking panel is the two sided mirror. I think the selfie is warranted

Previous sketches
Showing linear and flat
To mimic the mirror that protrudes from the eyes

Ill need a rigid material to hold onto the centre of my head and prevent wobbling.