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/custom-content/
Body replacements: http://luumiasims.com/post/152404590469/body-redux3-new-body-replacements-to-improve-your
Skin: https://www.thesimsresource.com/downloads/details/category/sims4-skintones/title/alissa-skin/id/1350973/
Skin tone: https://www.thesimsresource.com/downloads/details/category/sims4-skintones/title/skintone-set-v3/id/1346781/
No EA eyelashes: http://cienzroza.tumblr.com/post/160017930275/no-ea-eyelashes
3D Eyelashes: http://kijiko-catfood.com/category/the-sims4/ts4-makeup/
Mouth corners: https://www.thesimsresource.com/downloads/details/category/sims4-makeup-female-skindetails/title/mouth-corners-n03/id/1330957/
Nose contour: https://www.thesimsresource.com/downloads/details/category/sims4-makeup-female-skindetails/title/nose-masks–skin-detail/id/1365317/
Nose mask: https://obscurus-sims.tumblr.com/post/162047969368/skin-n1-overlay-3-swatches-teen-females-only
Cleavage detail: http://js-sims.blogspot.com/2015/02/js-sims-4-cleavage-detail-overlay.html
Eyebrows: https://www.thesimsresource.com/downloads/details/category/sims4-hair-facial/title/dolce-eyebrows-n98/id/1349027/
Eye bags: https://obscurus-sims.tumblr.com/post/159058189203/eyebags-n2-8-swatches-teen-males-and-females
Eyes: https://www.thesimsresource.com/downloads/details/category/sims4-makeup-female-costumemakeup/title/carboxy-eyes/id/1381622/
Hair: https://www.thesimsresource.com/downloads/details/category/sims4-hair-hairstyles-female/title/wings-os0713/id/1382664/
Bronzer: https://katverse.com/custom-content/makeup/
Face modeleur: http://www.jomsimscreations.fr/makeup-sims-4.html (Face Modeler 4)
Eyeliner: http://alainalina.blogspot.com/2017/07/glitter-eyeliner.html
Eyeshadow: http://alainalina.blogspot.com/2017/06/ryann-eyeshadow.html
Lipstick: http://alainalina.blogspot.com/2017/06/cleo-lipstick.html
Nails: http://sssvitlans.tumblr.com/post/157253128434/kimbarbielee-kylie-nails-inspired-by-those
Earrings: https://www.thesimsresource.com/downloads/details/category/sims4-accessories-female-earrings/title/mr.alex–starfall/id/1379934/
Ring: https://www.thesimsresource.com/downloads/details/category/sims4-accessories-female-rings/title/s-club-ts4-wm-rings-r-201704/id/1382322/
Necklace: https://www.thesimsresource.com/downloads/details/category/sims4-accessories-female-necklaces/title/toksik–bae-necklace/id/1348978/
Bag: https://www.thesimsresource.com/downloads/details/category/sims4-accessories-female-rings/title/handbag–trapeze/id/1319828/
Belt: https://www.thesimsresource.com/downloads/details/category/sims4-accessories-female-gloves/title/belt-2-%28original-mesh%29/id/1380648/
Dress: http://simsfunstuff.tumblr.com/post/156437270137/senate-dress-recolor-a-45-colors-dress
Shoes: https://www.thesimsresource.com/downloads/details/category/sims4-shoes-female-teenadultelder/title/madlen-xilon-shoes/id/1364467/