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/
Poses: http://helgatisha.tumblr.com/post/161886975232/ts4-model-poses-17-pose-pack-cas-download
Skin: https://www.thesimsresource.com/downloads/details/category/sims4-sets/title/r-skin-8–female/id/1377758/
Skin details: https://www.thesimsresource.com/downloads/details/category/sims4-makeup-female-skindetails/title/skin-details/id/1365360/
Body replacements: http://luumiasims.com/post/152404590469/body-redux3-new-body-replacements-to-improve-your
Eyes: https://www.thesimsresource.com/downloads/details/category/sims4-makeup-female-costumemakeup/title/taq-eyes/id/1364255/
Eyebrows: https://www.thesimsresource.com/downloads/details/category/sims4-hair-facial/title/eyebrows-n02/id/1353871/
No EA eyelashes: http://cienzroza.tumblr.com/post/160017930275/no-ea-eyelashes
3D Eyelashes: http://kijiko-catfood.com/category/the-sims4/ts4-makeup/
Hair: https://remussirion.tumblr.com/post/161966494803/leahlilith-daylily-retexture-ts4-mesh-by
Top: https://www.thesimsresource.com/downloads/details/category/sims4-clothing-female-teenadultelder-everyday/title/degradation-top–hq/id/1374436/
Skirt: https://www.thesimsresource.com/downloads/details/category/sims4-clothing-female-teenadultelder-everyday/title/reception-skirt–standard-version/id/1358790/
Eyeshadow: https://www.thesimsresource.com/downloads/details/category/sims4-makeup-female-eyeshadow/title/selection-eyeshadow/id/1371579/
Eyeliner: https://www.thesimsresource.com/downloads/details/category/sims4-makeup-female-eyeliner/title/eyeliner-22–lashes/id/1374449/
Blush: https://www.thesimsresource.com/downloads/details/category/sims4-makeup-female-blush/title/metazoa-blush/id/1377168/
Lipstick: https://www.thesimsresource.com/downloads/details/category/sims4-makeup-female-lipstick/title/virus-lipstick/id/1357439/
Nails: https://www.thesimsresource.com/downloads/details/category/sims4-accessories-female-bracelets/title/vampire-claws–female–mesh-needed/id/1339577/