Not one to judge.
Well I read your authors comments and I was a tad inspired... But not too much don't flatter yourself. I'm 15, nearly 16, and I also have been animating since I was 10, so like you I'm rather impressed and/or proud of myself. I think you did an amazing job for a 13 year old and should be proud. You keep it up at this rate and you'll be great in say, oh, 7 years? Just remember, always chalange your abilitites, nobody likes sticks, and to experiement. Good luck, I have faith in you!