First and foremost, I'm not pleased with this. It's not done by a long shot...I was planning on having all of Thursday and Friday to mess with it, but I was wiped out with the flu. Blech.
There's too much gamma in her skin, still...Too much specular on the clothes...the cloak is crunchy because I didn't allow it enough time to settle after I decreased the size of the polygons. That wouldn't so much matter in the finished version, because it calls for the cloak to be over-painted with feathers.
Sin is Pride, and this is an unfinished rendition of the Princess Magnificent With Lips of Coral and Robes of Black Feathers. Once she was a great hero, a Solar Exalt, but after she was murdered, she became a ghost who could not let go of the power she'd once had. She made a deal with a Primordial she'd once helped to slay and in return received untold power in her ghostly existence. Then, a millennia or so later, she revealed herself to Creation and was defeated. For the sin of her pride, for revealing the existence of the Deathlords to the lands of the living before it was time, she was to be devoured by her Neverborn master. Instead, she was given in servitude to another Deathlord, The First and Forsaken Lion, whom she hates with an unending passion. Prideful still, she disobeys him at every turn.
She is described in canon as wearing a robe of black feathers and a heron mask. The clothing under her cloak is green, and she never touches the ground when she walks. Couple of previous 3d works can be found here