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.
“Two can only keep a secret if one of them is dead” — Alison DiLaurentis.
CAS Background: https://katverse.com/custom-content/cas-backgrounds/
Shhh pose: http://sssvitlans.tumblr.com/post/147044451334/sim-ply-grey-hey-guys-four-weeks
Skintone: https://www.thesimsresource.com/downloads/details/category/sims4-skintones/title/skintone-set-v2/id/1313399/
Body replacements: http://luumiasims.com/post/152404590469/body-redux3-new-body-replacements-to-improve-your
3D Eyelashes: http://kijiko-catfood.com/category/the-sims4/ts4-makeup/
Eye bags: http://tamosim.blogspot.com.ee/2015/10/ts4-basic-10-eye-bags-set-for-all.html
Mouth corners: https://www.thesimsresource.com/downloads/details/category/sims4-makeup-female-skindetails/title/mouth-corners-n03/id/1330957/
Eyes: https://katverse.com/custom-content/eyes/ (ES03)
Contour: https://www.thesimsresource.com/downloads/details/category/sims4-makeup-female-skindetails/title/contour-n04/id/1330953/
Eyebrows: https://www.thesimsresource.com/downloads/details/category/sims4-hair-facial/title/s-club-wm-ts4-eyebrows-f-201703-/id/1368804/
Hair: http://avelinesims.tumblr.com/post/158894408736/leah-lillith-renaissance-retexture-80-swatches-in
Eyeshadow: https://www.thesimsresource.com/downloads/details/category/sims4-makeup-female-eyeshadow/title/%5B-solivagant-%5D–eyeshadow/id/1321311/
Eyeliner: https://www.thesimsresource.com/downloads/details/category/sims4-makeup-female-eyeliner/title/s-club-wm-ts4-eyeliner-13/id/1342828/
Blush: https://www.thesimsresource.com/downloads/details/category/sims4-makeup-female-blush/title/sweet-cake-blusher-n01/id/1293989/
Lips: https://sim-ent.tumblr.com/post/160078330349/batter-man-lips-dont-re-upload-download-my
Nails: https://www.thesimsresource.com/downloads/details/category/sims4-accessories-female-rings/title/nails-02/id/1296207/
Ring: https://www.thesimsresource.com/downloads/details/category/sims4-accessories-female-rings/title/natalis_double-halo-daimond-ring/id/1343995/
Watch: https://www.thesimsresource.com/downloads/details/category/sims4-accessories-female-bracelets/title/toksik–fawn-watch-and-bangles/id/1346110/
Earrings: http://onyxsims.blogspot.com/2017/02/gta-diamond-studs-for-everyone.html
Skirt: https://spectacledchic.wixsite.com/home-sims4/product-page/basic-midi-skirt
Shirt: http://sby2ol.blog.me/220993808546
Shoes: http://theslyd.tumblr.com/post/132326322901/heels-charlene-dolcegabbana-5-colors