So I'm thinking of making an arkham knight/red hood build, but I need to be able to see through the red hood helmet, which has no eyeholes. Ill be 3d printing the hemet most likely, so I could leave some holes to put some acrylic lenses in or something, but when I paint it, I don't want to be able to see through it from the outside. There are several really good fibreglass red hood helmets out there that I know are see through but completely solid from the outside. I've seen tutorials for making one way reflective visors (Halo,etc...), but what about making a one way visor that is a solid color from the outside? Also, would you still be able to tell apart the different textures in the helmet from where the lenses are vs the 3d print? If so, would it work better if I made it from fibreglass or carbon fibre?