1] Choose one "Nudes" (or one "Underwear" if you prefer) and one "Faces", not to combine several.
2] The installation of options is manual, they are included in the main file ("Nudes" or "Underwear"). Install the main file, then copy the folder (Data, Texture or Meshes) of the option you want and paste it into your Skyrim directory (C:Program Files (x86)SteamSteamAppscommonskyrim). Overwrite existing files.
3] The mods that change the faces of the NPC can cause bugs with this mod.
4] Bodybuider version may cause some clippings with some armor, it's normal and I can not do anything about it.
5] If you use official HD patch :