I've been on this website since I was 12. And when applying to collaborate in a youtube video I always used to say "I'm 12... but I'm mature for my age" lmao!! People still do this and I did it 6 years ago xD Thing is, Now that I'm older I understand why nobody chose me. For one, 12 year olds do typically go off on one and get really loud and unproffesional (which is expected, you're kids.) and the squeeker voice just wouldn't aid people in a youtube in any way. But if you're passionate then keep at it. I'm not saying 12 year olds wont get anywhere, I'm just remembering back how I did it!