Make Up, Eyes, Skin overlays, Skin Details etc....
Got into making quite a few aliens a while back! So I've showcased a few pix, there's also some more at my blog page... If you're ever in need of any Sci Fi or Alien cc, let me know, as I downloaded a heap of it for builds as well!
Sim ~ Kiri Tress
Kiri Tress.... grab her hairstyle here (at 'Maysims') It's in another language but it is a lovely style. Lipstick here. If you want to download her at the Sims Online Gallery, make sure you have the hair etcetera first so she won't be bald and so on. There are various cc makeup; just ask if interested, In the meantime download the outfit by clicking on the picture at Sims 4 Updates, or here.
For those of you new to custom content etc, make sure you enable your search to include CC in the dropdown menu on the left of the online gallery in search criteria.