Coming back to this after-the-fact, I’m realizing that it’s a pretty cool way to do exercise posts. I used to have a better way of doing these myself, and this is a great reminder. You should definitely post the example to the IndieWeb wiki when you get a chance: https://indieweb.org/exercise.
When you’ve got a chance, take a look at your h-card so that when you end up sending webmentions to others your name, website, and avatar parse and show up correctly. You can test with https://indiewebify.me/
Glad to have another WordPress IndieWeb site in the world!