One more test.
This makes for nice GIMP practice. Source image (here
https://gelbooru.com/index.php?page=post&s=view&id=7591493 ) was smaller than 5760x1080, and I had rotated and resized it around a bit trying to get it the way I wanted, so I sharpened and added a bit of noise to the image to give it some fake "grain".