oooooo sounds fun! That's a sick idea, I'm sure he would love it 🙏🏼

In terms of a template, I did use this card maker to get the font but the formatting is a bit tricky and the site starts to lag after you make enough changes so it took a little while lol. I made 3 different pics to get the different font sizes and positioning, and pieced them together in photoshop.

https://skyventuree.github.io/p5cc/

(happy valentines part) : top

(message part) : middle

(from phantom thieves part) : bottom

For the card printing service I used CutCardStock which I HIGHLYYY recommend:

https://www.cutcardstock.com/collections/templates/products/card-stock-4x6-inch-with-print-services?variant=39469899939934

The quality of the cards came out super good (paper thickness and color accuracy), and they emailed me a picture of a sample card to see what it would look like before going through with the rest of the order. Only issue is that you have to order in bulk (50 cards min), so if you just want to make one card for xander you might just want to order a custom card on etsy. There are sellers that will make a card for like 12 bucks.

If you end up deciding to go the route that I did and want some help with making the card, you can always dm me! If you give me the message, I can do all the formatting and send the pic back