How to make cubone's skull mask?

I wanna be cubone for haloween but i need help on how to go upon making the skull?

Assuming you can get wire bend a frame of the skull. Now make some paper mâché up and mould it on. Use the newspaper and flour glue method for the bottom layer and store bought mix for the top layer to give it some texture. I hope this helps :) Post an instructable of how you made it if you do!