有篇自我介绍,英语高手们帮忙看下有没有语法错误

有篇自我介绍,英语高手们帮忙看下有没有语法错误
Introduce
Hello!My name is D．H.This is really a great honor to have this opportunity and I believe I can make good performance today.Now,I introduce myself to you.I’m 15 years old.I’m a student from No.69 Middle School.I will graduate from my school next year.My favorite subject is English.I think that learning English is interesting.I have learned English since I was five.My hobbies are swimming and playing the piano.My attitude is Believe it,do it.I admire Wu Zetian best,and I want to be a person like her． That’s all.Thank you very much.

Hello!My name is D.H.It is really a great honor for me to be here today and I hope I can do a good job.Now let me introduce myself to you.I am 15 years old.I am a student from No.69 Middle School.I will graduate next year.My favorite subject is English.I think learning English is interesting.I have been learning English since I was five.My hobbies are swimming and playing the piano.My motto is Believe in it,Do it.I really admire Wu Zetian,and I want to be someone like her.That's all.Thank you all for listening.