Sometimes you can look at a simple solution RIGHT IN FRONT OF YOUR OWN FACE for years!!!

OK, I don't think that this'll take much explaining, so here goes...
I like to change my desktop pretty often. There's even a very good program called DisplayFusion that I find useful. Give it a try if you want, but use the free version. That version is a feature limited version, but otherwise is quite useful.
If you have one, or two, monitors drag & drop the appropriate sized picture to your desktop and use it a sample desktop background. All these pictures have been trimmed down. So they aren't going to look all that great, BUT they will give you an idea of how to make great looking desktop backgrounds.
Just looking at the picture on the monitor WILL NOT be the same as having it filling your entire screen as a background, so drag & drop.
The first time that I realized that I could use my own screen captures for a desktop were these two. These are from moments after the landing gear left the ground in St. Stephan (LSTS), Switzerland on a flight to Geneva. That flight is one of my favorites.

For those with a single monitor try this one as a background. (That's a lot of mountain in front of you, and the runway isn't all that long.


Here's a landing in Pisa, Italy for a single screen.

And here is the same landing spread over two monitors.

As I said, the quality has been reduced to post it here. YOUR screen captures will come out much better saved to disk.