Dear Sally!(или любое другое имя)
How are you doing?
I live in (пишешь город свой).It's very beautiful,I think!I live with my parents,(если есть брат или сестра тоже напиши,или бабушка с дедушкой).
Every day I go to school,and after school I walk with my friends.We always have a good time.After walking I go home,eat,and do my homework.
Now I have to clean my room,so I say you goodbye!
Please,write soon,
With love
(Пишешь своё имя)