When I was eleven I was invited to a fancy dress party by a school girlfriend and I got my aunt to make me a costume, and I dressed up as a famous guitarist and went to the party, no one knew who I was at first my disguise was so good.......
I had a Gene Simmons costume (store bought I'm afraid) when I was about 10, and it wasn't nearly as cool as this. You could have passed for "Demon" himself.:)