I've been messing around with the Animation API since it was announced, and the SDK available for download. Looks like it's a lot of fun!
There's not many samples of the Animation API code out there, so here's one I shoehorned into a watchface (under GPL);
https://github.com/sunpazed/garmin-hedgetime
If you're lucky enough to own a fenix5plus, you'll be able to compile it and run it on your watch.
Remember to update it to the latest beta FW.
Here's what it looks like on the wrist, https://twitter.com/sunpazed/status/1116603810074337281
Looking forward to seeing the great things you all make