I have nothing more to say other than wow. Well, maybe I do have more to say.

I love the concepts. It's so attractive, yet the very 'evil' side of it makes you want to cringe, but it's oh so sexy. xD

The third one appeals to me.

Character advancement or jdiffered concepts?

I like the middle one

The hood's been done - but the face burnt to ash with fiery orbs, now that's spooky. Especially with smoke for hair or fire if she's still burning...

Oooh...

Personal opinions:
-Sorceress on the left looks like she's one botched clothing damage roll away from nudity; why bother with the hoodie if she's going to expose everything else? Middle sorceress looks a little better in that regards.
-The staff on the left looks subtle malevolent, with the quasi-grasping nature of its appearance. The staff on the right is more actively so; I expect it to say something in a black tongue to its holder.
-Sorceress on the right is the best of the lot. The quasi- smoke-and-darkness look she has going instead of the hood really unnerves me... that's what you're going for, right?

I'm partial to the middle one.