I want to be a famous child actress how do i start?

I does not happen overnight. Plus child actors never make it in the long run, if you make thaat mistake it will ruin ur acting future. Never be above community theatre. That is where every actor gets their start. They will tell you if your any good or not. Girl scouts and new years skits wont tell you anything. and you dont need an agent for a looooooooong time. you first need to build a resume with community acting. those skits do not count. After you get a few main parts. go to a proffesional theatre for non equity, and take whatever part u can get. after you get a few main parts, go to equity theatre. U can try some commercials at any time. dont try to get any headshots until you are told that you have some promising potential from someone besides your parents or girl scout leaders, like a director with a good resume. Be warned, this is not a proffesion that "normal" people go into. you will work with some strange, nutty, mean flighty etc. people. especially in community theatre. to be realistic, at your age you wont be on the "big screen" until your about 20 or older.