Dear -------имя друга,
Hi! I was so glad to have a latter from you, and today I'm going to tell you about my summer!
Firstly, I went to the sea! The wether was so hot and warm - the best weather to go to the beach!
Secondly, about 3 days I'll go to the Disneyland! I'm so happy! And when I return, I'll share with you my photos out there! So, wait for my latter!
Best wishes,
--------твое имя