Do I sound okay(video link)?

I have got to say you sound great, I have been singing for my entire life, i'm 16. I love the style you use to sing it. I love the little flick you have when you switch into your high voice. I think it's fine. I don't know if it's cause you were just recording or if that's how you always sing, but be more confident, sing a bit more stronger, just not too strong. I think VERY little needs to be changed. And yes you actually do sound mature. Some girls that I know my age can't even sing that mature. Good Luck!