I've never uploaded my collection of handmade birthday cards here, I made a bunch since I was commissioned some by my friends in the past few months.
This is probably my favourite
Since my friend is too old for Hogwarts, I decided to admit her to Hogwarts school of continuing education (that's what the letter basically says), and delivered it in the middle of a crowded pub, mocking an owl flight with the HP theme in the backround. Yep, that was embarrassing, but no one was volunteering.
You can't see the back of the card, but I added the exact address of the place we were, including " table in front of the beer dispenser", like a real wizard letter should be correctly written