В правом верхнем углу пишешь Город и страну на английском (Moscow,Russia)например.
Строкой ниже дату 24/11/2017
С красной строки
Dear Ben,
Thank you for your later. It was nice to hear from you. On this latter I want to answer your questions.
So, you ask me about should child help there parents. I think yes, they must. Becourse our parents need a help. I always help my mom with housework. I love wathing the dish and my mom happy when I help her. When I have a free time I always clean the flore or the window.
Do you usually help mom like me? What material do you use?
Sorry, i must stop writing now because I have a lot of housework.
With pleasure,
(Твоё имя)
Точку в конце сочинения не ставь, это ошибка, могут даже снизить балл! Это по критериям Огэ и Егэ.