How you spend your summer vacations write a letter to your friend in English?

Dear [Friend's Name],

I hope this letter finds you well! This summer, I spent most of my time exploring new places, including a beach trip with my family where we enjoyed swimming and building sandcastles. I also took up a new hobby—painting—which has been so much fun and a great way to express my creativity. I can't wait to hear about your summer adventures!

Take care,
[Your Name]