The person appears to be a/an White Male, approximately 10 to 19 years old.
Hey dude! 

Hope you're doing awesome! I'm sending you this postcard from sunny [location], and it's epic here! The weather is perfect, and I've been checking out some cool spots. Can't wait to hear what you've been up to! 

Later, I'm hitting the beach, so let's catch up soon! 

Catch you later, 
[Your Name]
Salam my friend!  

I hope this message finds you in great spirits! I'm sending you warm greetings from sunny [location]. The weather is absolutely beautiful here, and I've been soaking it all in while exploring the local sights. I often think about our times together and would love to hear all about what you’ve been up to lately.  

Later today, I plan to visit the beach, and I can't wait to share more stories with you. Let’s catch up soon!  

Take care,  
[Name]