Unzip the downloaded file and place all those files into your Sims 4 Tray folder, which can be found at
Documents » Electronic Arts » The Sims 4 » Tray.
Don’t forget to download all the custom content listed. Otherwise, your sim won’t look like mine.
Place custom content files into the Mods folder located at
Documents » Electronic Arts » The Sims 4 » Mods.
CAS Background: https://katverse.com/category/custom-content/cas-background/
More CAS Presets mod: http://databus.blogspot.com/2017/12/the-sims-4-mod-more-cas-presets_12.html
No EA eyelashes: http://cienzroza.tumblr.com/post/160017930275/no-ea-eyelashes
Sliders: https://luumiasims.com/post/174006296684/the-sims-as-a-franchise-might-be-headed-toward-a
3D eyelashes: http://kijiko-catfood.com/3d-lashes-version2/
Lipstick: https://katverse.tumblr.com/post/174815769117/gaia-lipstick-13-shades-toddler-elder-lipstick
Skin: https://magic-bot.tumblr.com/post/170991109462/skin-3-overlay-version-bgc-new-texture
Hairline: http://candycanesugary.tumblr.com/post/151192203125/baby-hair-eve-3-to-4-conversion-21-swatches
Face contour: https://katverse.com/custom-content/makeup/
Feline look eyeliner: http://www.jomsimscreations.fr/makeup-sims-4.html
Earrings: https://chloem-sims4.tumblr.com/post/173539340363/flower-earrings-created-for-the-sims-4-8colors