I started off by playing around with newspaper and figuring out what shape I wanted. As you can see I had to adjust the eyes at first they were so high.
I cut it out of red felt and then, in order to make it a little sturdier I sewed it onto another sheet of red felt and then trimmed it down.
Then I kind of went a little cray-cray with white and black and added ears and eyeliner and a nose and the white foof. I sewed the elastic farther back and not from the actual side so that from the front you could still see the shape of it and not have it pulled completely back against my head.
and once I figured out the ears I wanted to use I sewed the mask on to another layer of felt for reinforcement and then sewed the ears so I ended up with a mask all sorted.
So if you still haven't figured halloween out and you have an hour.....