I'm trying some now. Check threads for skins that work in the base game/TS2; I find they also work in SLS.
* If I come across a few that I find (& use) I'll update here and let u know (have to locate where I got them...). I only pass on what I find that works in the actual SLS game since it's what I'm playing.
I'm trying to make a mini tutorial with the helpful info I found here. Not going to re-invent the wheel, just grouping a few steps together for those who want to use (not create) custom skins, hair and dont know how.
In the meantime here are a few threads that helped me:
http://sims2pack.modthesims2.com/ <---helps you locate files; in essence finding errors & in downloading or finding conflicting mods that are causing problems in your game so that you can fix them
http://www.modthesims2.com/showthread.php?t=92541 <---helps you find the skins you've dl
http://www.insimenator.net/forumdisplay.php?s=&f=348&page=1&pp=15&sort=dateline&order=desc&daysprune=-1 <---Enayla skins
Using (Enaya) skins as defaults in your game:
http://linna.modthesims2.com/showthread.php?t=297410 You'll find many wonderful creators,designs & skins out there that work with lifestories if you search the threads--This is just a start, hope it helps.
*See the thread "Supernaturals" for pics of some of the custom hair and skins I've used.