I like designing trading cards, especially of characters. Here is a sample of cards about the heavenly bodies of the solar system, but designed by Rachel Leticia as Japanese high school girls. There’s no card game or play mechanics that go with this (because game balance is way harder than visual design) – I just wanted to make cards.
(card back design)
Credit for the character designs and text goes to Rachel Leticia (used with permission); check out more of their stuff at https://flytedify.com/. Card design and other art by me (John R. Canter), and made in Serif Photo Plus, a free image editing program, and Serif Draw Plus, a free vector graphics program.