I found out that you could audition by sending a picture of yourself and some information to Newsround.
Rupert GrintBefore I knew there was going to be a film. I was the biggest Harry Potter fan. I read all the books.
Rupert GrintI especially like Ron. Sometimes you feel so sorry for him because he's always getting stuff from his brothers. And he's got a fat, lazy rat.
Rupert Grint