I like how this kind of communication can easily turn into interactive diary, like uninspected meeting at train, and as a person who like people, let your empathy, beauty and uniqueness fill the postcard for me. ❤️
Write about your days, interests, ideas, wishes, or some quote or piece from your favorite book (on your native language and then translate on english), or just find some idea here: https://www.postcrossing.com/help/what-should-i-write-on-the-postcard :). I am much more interested in writing part than the look of the postcard, choose with your heart and I will be satisfied, because the postcard in the mailbox doesn't have measure.
But, as a time adidicted person, just write the date, please. :)
Happy postcrossing, beautiful people!