Check out http://www.youtube.com/watch?v=ikmOqbhxH4I
Here's a video on where to find the Character Customization for Elara Dorne and many other companions. No level requirement to get it, just need 12,500 credits. Enjoy and please like the video :]
http://www.youtube.com/watch?v=ikmOqbhxH4I
Elara Dorne, Bowdaar, Corso Riggs, Kira Carsen, Risha, T7 and Tharan Companion Customizations. Shows what the kits look like.