I Really Really Want To Be An Actress

Hi,

I am 14 I will be 15 in June, I live in El Paso Texas and I really really want to be an actress,....I just love to be in front of a camera...I don`t know how to start,the problem is I don`t have much time because in 2 years I have to move to Germany!!
How did Johnny Depp or Orlando Blomm or so on get famous ?
Please help me this is the dream of my life,...I would give up everything to get an actress.
I also really want to be famous soon and work with other famous people!

Please answer very soon!

Katharina