Here is a brief explanation of how you can get more placement options on your Sims than EA provides.

First you need the mods that I have uploaded here:

https://www.mediafire.com/file/22n50nqr6pkvkil/NRaas_MasterController.package/file

https://www.mediafire.com/file/22n50nqr6pkvkil/NRaas_MasterController.package/file

Mod The Sims - XCAS core mod: more tattoo locations, edit naked outfit, slider hack, body hair, more - update 5/23/16 Steam version added.

Once you have put the files in your mod folder you can start the game.

When you are in your save game, open the Master Controller.

Then go to Settings, CAS
Naked Tattoo must be "On" for it to work.

I am uploading a few more pictures here for a better understanding.

I hope you enjoy it.
I would be very happy if you use my tattoos and post pictures on Instagram, that you tag my page.