Steam now allows you to set custom images for all items in your library, including non-Steam games. Here are a few images I have made for myself derived from official artworks and images found on Google Image Search. If you are the copyright holder or original artist and wish me to remove an image, please contact me.
These PlayStation images are the latest updates to the full list of Steam custom images.
The first item in the list is a PNG template that I’m using for all my PlayStation games.