英语作文，80词左右，初二英语，如果写得好就再提升

Dear Mrs.King:
I'm writing to apply to help the children with their English.I'm Ann.I'm 13 years old.I come from NO.1 Middle School.I like reading books,dancing and playing basketball.I'm a book worm and I'm really exellent in English.I won many medals in English competitions before.What's more,I can speak English very fluently.Also,I'm good at getting on with kids.So I think I 'm qualified.Are you interested in me?Can you admit me as your centre member?I think I can be a volunteer within three days.