Diary of a Wimpy Kid costume

I had to make a costume for Book Day at school and decided to make a 'Diary of a Wimpy Kid' costume. I bought a large balloon and covered it with papier-mache.
I cut a hole for the mouth to see through and covered it with black mesh. I wore it with my P.E. kit.
I had to fill in cracks with filler so the head ended up quite heavy!