muhaha!!
I'm not gonna bother explaining, because I only want the true nerds and geeks out there to get it.
Naw, just kidding.
It would be REALLY hard to explain it without having my friend on MSN give me some help, and he's offline at the moment.
Watch the special edition DVD of Return of the Jedi and pay close attention to Boba Fett, I think you'll get it.
=D
When I get the ensemble completed and do a good close up, you'll instantly be able to tell she's a sith by the yellow eyes.
That is if the black robes and lightsaber aren't already a dead giveaway.
=P