Make you own Zero from the Nightmare Before Christmas from this Instructable!
CHEAP DIY - dollar store: rubber mask, frame, twine, and spider webs. Tie the mask to the frame then add the webs. BAM - cheap
Plague Doctor Mask DIY -- Not difficult, just a lot of hand sewing.
White Horse Mask with Detachable Bridle in leather by HawkandDeer
One of the better Plague Doctor mask tutorials I've come across. This one also makes use of special effects lights! Very clever.
Masquerade Flesh Mask Halloween Makeup Look
Green Man Mask - a symbol of nature and fertility. step by step tutorial with polymer clay. Perfect decoration for Beltane or may day celebrations
DIY Alice in Wonderland Steampunk White Rabbit Mask Tutorial
The Cardboard Collective: cardboard mushroom costume (Next year's Halloween costume!)
All sizes | Hedgehog mask, painted | Flickr - Photo Sharing!