To set as a desktop wallpaper pick your resolution, and then right
click on the image which appears in the new window, choose from
the options - set as desktop background.
If your desired resolution is not offered: Once the picture has
been set as a wallpaper right click the new image on your desktop
and select - properties then choose desktop and in
the options given for position choose - center.
If you prefer, there is a selection of GIF animated wallpapers on