The lower body feels quite complete, compared to the other Tau work. I think, a little more use of cubic shapes would not hurt. I do like the refinement of the breasts though. The face seems a little flat at that angle and with such subtle shading. Looking at the other Tau work, it had a softer rounder structure to contrast the body.
Anyway, I love the Ideas. This work feels much like the Idea is advancing. Great luck with it!