I made a web toy Memory Card Creator to make your own memory card images, with help from the Recurse Center web 
. If you like, you can try it out on my personal website webtoy (uses PaperJS as the front-end framework, might take a little time to load; check your browser permissions as well).
I also did fan craft of the characters, after getting lucky enough to win a press packet including a deck of challenge cards in physical form.
Three decorative frames for Exo character cards