Hi there, and welcome to the forum.
Note the correct spelling of "write" and "moving". Also, capitalize "Arab" and "English".
I'm not aware of any Arab English-speaking country. In any case, we cannot write the email for you, but if you write your email and post it below, we'll take a look at it.
Mind you, I really don't think you need to worry about the correctness/formality of the email. The school won't mind too much; they're after your money, not your proficiency in English!

Student or Learner