I'll have to put up more images when I get the chance (and resize them derp), but I found that I can't live without some of these great skin overlays, defaults and details.
https://i.imgur.com/28qHLNc.png
The Ultraviolet skin by madmono is definitely my favorite as well as the cinnabon overlay combined with it.
Forgot the name of the beauty marks/moles that are scattered over the body and face, but it definitely adds a subtle detail to sims, much like the 3D lashes I thought nothing of before, but once I tried them on my sim it looks pretty natural now.
I love them because it still keeps everything Maxis Match to my liking. Just adding details and smoothing some of the skin.