Не совсем понятно, что именно требуется, но я просто напишу всё это, но без ошибок.
Dear Steve!
Hi! What's new? What about your school? Do you have your favorite subject?
As for me, everything is OK. I still live in London. It's pretty fantastic city. By the way, I study at Oxford.
I really miss for my hometown, my relative and friends. I will return back as soon as possible.