Kingdom Hearts is a Japanese-American video game,
this is Sora: http://i218.photobucket.com/albums/cc286/Noodle1/250px-KH_Sora.jpg
first draw your crown on a piece of paper..
trace your crown on the cardboard.
now use the scissors!
glue the aluminum foil on your cardboard crown, use about 2 layers of aluminum foil.
add a jump ring
VoilÃ , you're finished! :)