Пожалуйста, помогите проверить письмо! Dear ..., How are you? What have

Пожалуйста, помогите проверить письмо!

Dear ...,
How are you? What have you been up to?
You asked me to tell you about my class. My class very big, all my schoolmates different in interests and character. This year to us two brand new pupils came to a class. One of them, Mariam, is from Azerbaijan. It is very interesting to communicate with her, she tells about culture and traditions of the people.
The physics passes in my class only theoretically. And how at you? We have no practice at all. More or less, I well know this subject, but I think that this knowledge in life won't be necessary for me.
History, unlike physics, I love very much. It is so interesting to study history of the people, the past. The teacher at us very strict and exacting therefore most of pupils belong to history seriously.
I am so glad that has met such remarkable friend as you. This my first letter which I wrote in English. I hope, you will receive it soon. Tell that at you new. Looking forward to hearing from you
Best wishes, Valeria