the sensuality is this is hot and believeable. love the slight motion blur like effect - but suspect this due to some form of center spot defusion or vingetting.
the black not be pure - attracts and yet cause a photographer to wonder what happend during printing. i like the b&w tone choosen for this. Is this on b&w film ?
I feel that the pose is almost perfect - while I cannot offer any solutions to the few very minor points which may be unsolveable. Her right thighs a little too
large - may be either a change in lighting or a tighter crop could help. Her hand is a little awarkard.