帮我看一下我写的这篇英语文章有什么问题，英语好的请进

Dear Liu Yun,
Hi!I am Xu Xinyi.Anne is my english name.I am happy to have a new pen pal.I live in Ningbo with my mom and dad,Ningbo is a beautiful city.Welcome to Ningbo!I don't have a sister or brother,but I hope to have one.I have a small family, but it is coziness.There are three people in my family--father,mother and me.My mother is a teacher.She works in school.She is slightly fat,but she is very optimistic.She often say:"laugh and be fat."She likes listening to music.And my father is a boss.He is very tall and thin.I love my father,because I take after one's father.He likes basketball very much,he is a loyal fans.I like riding my bike and drewing pictures.What about you?
要赶快呢！明天要交的 我都是自己写的呢，而且是第一次提问，大家帮帮哦 我还很小，5年级的，不知道自己语法啊句子方面有没有问题的，哥哥姐姐们帮帮 多帮我挑挑语病哦

Dear Liu Yun,

Hi!I am Xu Xinyi.Anne is my english name.I am happy to have a new pen pal.
这句话中：English要大写。

I live in Ningbo with my mom and dad,
这句话之后要句号。

Ningbo is a beautiful city.Welcome to Ningbo!I don't have a sister or brother,but I hope to have one.I have a small family, but it is coziness.
"coziness"是名词，你这儿应该用形容词cozy 或 warm.

There are three people in my family--father,mother and me.My mother is a teacher.She works in school.
She works in a shool. 否则，in shcool是“在求学”的意思。

She is slightly fat,but she is very optimistic.She often say:"laugh and be fat."She likes listening to music.
She often says：要在say之后，加s,因为是第三人称单数。

And my father is a boss.He is very tall and thin.I love my father,because I take after one's father.
I take after him. 不要写one's father.

He likes basketball very much,he is a loyal fans.
he is a loyal fan.用单数，因为是he is a ..