请帮我检查一下这段英文的自我介绍是否有错.

问题描述:

请帮我检查一下这段英文的自我介绍是否有错.
My name is Chenxinyi,(这里用逗号,所以后面小写)my English name is Zizi.I am from Tianjian primary school.I am 12 years old.There are five people in my family.I like guitar and singing.I will study hard in new school.

I come from ...
I like playing the guiter...