"Yeah, if you want to customize your Library Images (not just this one, also the *cover* image. I posted artwork about that, too.

I've been changing this one for a while, but just found out we can change cover images, too. Pretty neat.

Can go further and edit the image after seeing how it fits, to include the title or something. :)

Right click on the image at the top right (see image) when in library and you have a game selected. Then you can see the options available. If you don't see the folder for your game when it opens, check the store page. The number sequence in the store's link is the folder name for the screenshots for that game. ^.^"