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/cas-backgrounds/
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/
Defined nose: http://sims4nexus.com/?p=4813
Face contour: https://obscurus-sims.tumblr.com/post/159058189203/eyebags-n2-8-swatches-teen-males-and-females
Nose mask: https://obscurus-sims.tumblr.com/post/158655406378/9-swatches-teen-males-and-females-hq
Lips: https://ddarkstonee.tumblr.com/post/159339328813/lips-n2-12-swatches-teen-females-hq
Eyes: http://simpliciaty.blogspot.com/2016/12/lillie-eyes.html
Eyebrows: https://www.thesimsresource.com/downloads/details/category/sims4-hair-facial/title/fox-eyebrows-n105/id/1362184/
Eye bags: http://tamosim.blogspot.com.ee/2015/10/ts4-basic-10-eye-bags-set-for-all.html
Baby hair: http://candycanesugary.tumblr.com/post/152214968875/baby-hair-serena-hope-you-guys-enjoy-the-new
Hair: http://simfileshare.net/folder/13711/ (HallowSims_NewseaParadise.package)
(better hair: http://simpliciaty.blogspot.com/2017/05/starfall-hair-mesh-edit.html)
Blush: https://www.thesimsresource.com/downloads/details/category/sims4-makeup-female-blush/title/blush-07/id/1365359/
Eyeshadow: https://www.thesimsresource.com/downloads/details/category/sims4-makeup-female-eyeshadow/title/natural-smokey-palette/id/1304701/
Nails: https://www.thesimsresource.com/downloads/details/category/sims4-accessories-female-rings/title/glossy-square-nails-n11/id/1339222/
Jacket: https://www.thesimsresource.com/downloads/details/category/sims4-clothing-female-teenadultelder-everyday/title/pearl-biker-jacket-(untuckable-top-version)/id/1363880/
Jeans: https://savagesims.wixsite.com/savagesims/product-page/milf-skinnies
Shoes: http://puresims.tumblr.com/post/147814435467/pixicats-acne-clover-boots-3t4-conversion-works