Drawing with shadows
cardboard monkey mask - Google Search
dragon costume diy - Google Search
Máscaras de Papelão
Paper Lion Mask
Playful paper mache masks for kids masquerade party - A Guest post by Jason Phillips and JustPoshMasks.com.
I think this is a great idea and could also paint it to make it the witch's white bears
Dinosaur Mask Collage by ~Cypher7523 on deviantART. Not great directions for mache or supplies, but good structure photos.