Hey, any chance of you uploading any image files or artworks, suitable for Steam grids?
I import all my games into Playnite (open-source frontend for every game store), using the Steam guidelines: 600x900 for thumbnails (600x800 when using a platform banner), 1920x620 for background image, whatever for logo/icon. See, for example, www.steamgriddb.com.
The three images used for the wallpaper loop here would be perfect for an icon, for example.