Stephen;
I like this set. I think #1 would look better without the heavy shadow on her face. #6 doesn't really belong in this set, not flattering to her IMO.
That being said maybe a little fill or something is needed, the two light opposite sources seem to be causing a little bit too much difference in light and dark from one side to the other without some additonal fill or maybe moving the lights foward a bit to reduce the difference between light and dark.
I actually like #6 having shot some Eastern Dancers before and uderstand why it would be in the set if thats the theme.