Dear [Recipient's Name],
How are you? I hope this postcard finds you well. I'm writing to you from [City/Country] where I'm currently on a trip. The weather here is [describe the weather], and it's such a pleasure to explore this beautiful place.
I miss our conversations and the time we spent together. I can't wait to share all my stories with you when I get back. In the meantime, take care and keep in touch!
Warm regards,