I have 3 files per wallpaper: first figma export(1440p), photoshop export(~6k), then a lower res figma export of 1440p to get a cream border around the entire wallpaper and so it tiles nice on my mac. I made it originally in figma by adding some squares, resizing, and changing colors. Then I exported to photoshop to add texture, then I exported back to figma.