BakieGaming has created two video tutorials that will teach you how to create animated wallpapers for The Sims 4 using two programs: Sims 4 Studio and Photoshop.
The tutorials are very detailed and will teach you everything you need to know about creating smoothly-animated wallpapers.
There’s also an animated wallpaper by BakieGaming that you can already download on Mod The Sims. Simply click on the image below to download it!