[в правом верхнпм углу] [твой адрес: номер квартиры, номер дома, название улицы st., почтовый индекс], Moscow (или свой город), Russia. the 30 of September.
[ниже слева)
Dear Lucy,
I was glad to get your letter! Sorry, I haven't written for so long. I was really busy at school.
Three days ago I had my birthday party. Now I'm [укажи свой возраст]. It was very cool. All of my friends came to me and gave me a presents. They are so nice. Then we had an official part of this party. I, my parents, grandparents, cousins and, of course, my friends celebrated my birthday in the restaurant. And then we with my friends walked for a morning. I'm sorry, that you haven't been with us.
Lucy, in your last letter you wrote that you want to go to the trip to New York. Please, tell me something about it. I have never been in New York. I very want to have a trip across New York, but I don't know when I can do it. Have you visited some interesring places? Have you made a new friends in that city? Have you traveled just across New York or visited a cities that not far from New York too?
Best wishes,
[твое имя].