How Can I Get A Career As An Actress???

I`ve always wanted to become a famous actress since as far back as I can remember, but I don`t have a clue as how to start out. All my life, I`ve been taking drama and performing for people, I`m even in drama at the highschool that I go to. I`m 15 years old and I`ve written 3 stories on my own and acted them out with a bunch of my friends, whom would also like to become actors and actresses. I can pretty much do any kind of acting; even with accents or singing parts. I love to act, sing, and dance, but my dream is to become an actress! That`s all I`ve ever wanted to do and I`m not going to give up. I don`t mean to brag, but I know I`ve got the talent because I`ve been told that I should go into the acting business by several people(and no, not just by my family and friends! By every single one of my drama teachers and strangers that I`ve performed in front of). I would do almost anything to fullfill my biggest dream....if only I knew how. PLEASE!!! If you have any info. On how to become an actress, PLEASE inform me, or if you can help me, I`d appreciate it if you told me!!!!!!