Her eyes are incredible in the second photo, they really seem to draw me in. But, in all the photos she appears to be a bit washed out. I don't know if that is what you were going for with the vampire theme or not though.
first 2 are great... nice angles and emotion.... the second two.... the lighting is killing me.... turn down the flash and get a softbox or bounce..... but you got the right idea.... keep goin with it
The first two I wouldn't see as "dark", more just normal portraits, but nonetheless they are awesome. The last two are more...uhh...sexy goth rater than dark to me. Dunno, just an opinion. Oh, and in the fourth pic the eyes are a little blurred. But I love the way all of them look anyway.:thumbup: