英语自我介绍怎么写？

My name is xxx. I am twelve years old. I am a little thin with short hair and a pair of glasses. I like singing and dancing. I am good at English and Chinese. But I am weak in my math. I am interested in doing all kinds of sports. On weekends I often play basketball and table tennis with my friends. I prefer skating to swimming. My favorite sports star is Yao Ming.

名字：xxx；年龄：12,我比较瘦，短头发，戴眼镜，我喜欢唱歌和跳舞，我擅长英语和语文，但数学比较弱。我对体育感兴趣。 周末我经常和朋友打篮球、乒乓球。比起游泳来说我更喜欢滑冰。我最喜欢的体育明星是姚明。