The stuff your gonna need:
White copy paper
Flour(All purpose kind)
Balloon( get the lager than a 12 inch.... so a 17 of 25 inch will do)
a cloth (any color you want the pupil to be.. make sure its thin enough to see through)
hot glue gun
a clear-file folder (optional)
white spray paint( the glossy kind)
things to stuff under cardboard (old scarf, shirt, other cardboard)
Items that could be helpful:
trashbags (I'm very messy.. and paper mache can get everyone. that stuff is NOT easy to clean up.)
Step 1: Size up your balloon
It may take a couple of balloons to get the right shape that you want, but above is a reference on what it should kind of look like.
This balloon was actually a tad to small, Long wise, so i blew up another one that was slightly larger.