Years ago, I was inspired to bring to life a great piece of art by my friend, Doug. I used a crusader helmet template by Ben Eadie as a basis for the helmet and constructed it out of floor mat foam and craft foam. The wearer can see through the black fabric covering the eyes and mouth.
Doug's latest art: https://www.instagram.com/glitchcraft.webcomic/
Crusader helmet tutorial: https://www.youtube.com/watch?v=aWRBCTUQ0Nk