I really don't know the Star Wars Empire of stories beyond the 6 films, but this character looks great. I love the fetish black leather look with the cool red detailing. Her cape flows nicely and the background adds real atmosphere. A pretty and sexy girl/woman with "such" attitude in her face and stance. For me the best part is her carrot red hair... as I too am a sucker for a redhead.
You did a great job with Mara; especially her outfit and overall look.
Though I have one small nit: her lightsaber. Before Mara ever met Luke, she never once used a lightsaber -- even one made for a Sith -- since she was trained to lead the Emperor's forces in the field. It's been established in the books that she didn't start using a lightsaber until after the "Heir to the Empire" trilogy, and even then, she wasn't shown using one extensively until the binary novel "Specters of the Past/Visions of the Future", and at that point it was a Jedi's blue-bladed 'saber, not a Sith's red one.
You'd be right as far as releases on when she was shown with a lightsaber, but by the timeline the Mara Jade series of comics takes place prior to Heir to the Empire and she is depicted as using a saber while still the Emperor's hand. It was a purplish/red blade and used in tandem with her blaster.
I may come off as snarky here, so let me just give you fair warning up front.
As far as I'm concerned, the Comics are simply an alternate to the official "canon"; to which I feel is the novels, starting from the original "Star Wars" going onwards, up until the last Zahn binary novel. Everything else is just that: an alternate showing, based on the Star Wars universe. Now, if Lucas himself comes out one day and says, "Oh, Mara always used a lightsaber. Something just happened to it prior to the 'HttE' novels.", then I'll change my view.
But, as far as I'm concerned, the comics aren't true canon.
Problem with that is, is the fact that Luke matured through the novels and in Episode VI. The one author that handled him best is Timothy Zahn -- Luke was far less a whiny farmboy, more like the Jedi Master he grew into becoming.
Besides, Lucas himself approved of Mara becoming a Jedi and Luke's wife. All the nay-saying won't change that.