In the name of God

Myname (My name) is Melika sadat Heydarzadeh.(Do not forget to put down dot (.) at the end of your sentence)

im (I'm/I am) thirteen years old.

i was born in Tehran 

iborn in azar 

im from tehran in iran 

my English teacher's name is Ms. Mozaffary 

im (I am ) in eight class  (what do you mean? do you mean I am in grade 8) 

my name s school (school name or school's name) is azadeghan sadid

My dear Melika,

Many thanks for your perfect introduction. I loved it.
Do not forget to start your sentence with a capital letter and start proper nouns with a capital letter. For example we say Tehran not tehran.I have corrected some of them for you.

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