Sure, I actually have the little owl project as desktop wallpaper too!
For this you will need to have Wallpaper Engine:
https://store.steampowered.com/app/431960/Wallpaper_Engine/
Then subscribe to one of these workshop items:
Owl that follows the mouse: https://steamcommunity.com/sharedfiles/filedetails/?id=1848270557
Just a windmill using the old Spine widget: https://steamcommunity.com/sharedfiles/filedetails/?id=1848268108
The first one is likely the one that you want.
If you set the animations in your Spine file to be similar to the ones in the Owl example project (basically a neutral idle one and 4 directions) you should be able to replace them.
Owl example
Here's also an example of the owl that uses data uri instead of loading the files separately:
https://www.erikari.it/uploads/703-owl-uri.html
This example is useful to make sure everything works offline if your pc is not connected to the internet.
