I would do an internet search for Red Power Ranger helmet. Just find the image that would work best and cut it out from regular paper and you will have a template. Just resize the image so that it will cover the face. I would then place the template on black fondant and cut it out. Then place the black part of the mask on white fondant and just trace around the black so that you can see the white background.
Hope this helps!
This link is a really good picture that you cut your template from.
http://i989.photobucket.com/albums/af12/hkgg/WPHOTO/W17_1.jpg
There's always room for cake!
