u/AnnualRadish477

Hello ! I'm planning to cosplay as the moon from Zelda Majora's Mask, I'd appreciate some advice since I haven't made a mask like this before. I'm aiming for a helmet that fits over the head, like the character from outer worlds in the second image. I'm planning to make the head out of a papier mache globe with the bottom cut out, but there's two things I'm not sure about:

How can I keep it from shifting around on my head, is there some way to make an inner brace or helmet to keep it sitting as it should?

Where to place some holes so I can still somewhat see and that it won't suffocate me?

Thanks in advance!