How can i become an actress?

Hey, i'm a 12 year old girl and i'd really like to become an actress. i live in plymouth, michigan and sadly have no acting experience but i have been dancing for ten years and i do musical theatre solo's. so, if you think you can help me out please write an answer but if you can help me i'd really like to stay close to my area. to give more of a description to what i look like, i am five foot three, dirty blonde hair. blue eyes, not fat but not twig skinny, and people say i have a gorgeous smile (i know from my description i sound full of myself but i'm really not.) i am also very good in school. this past school year i have kept a 4.0 and honor roll all year and have been excepted into my schools national junior honors society. but i am not a nerd i am a pretty girl, yes i know it still sounds like i am full of myself but please dont think that. Thank you so much! any help at all would be wonderfull. =)