Looking very cool, Valence. Like you, I always wanted to try doing a manga styled image, but haven't given that a go just yet.
But think you have done a great job on the design for this one, and look forward to seeing it's completion.
Though, there are two things that stand out to me at the moment, both in relation to her skirt. First, on the left side where it reaches out toward the medallion. With the current shadowing, it appears to be pointing forward, and looks unnatural to me. I would think the skirt would be more rounded there, flowing, following the contours of her hips. - Second, with the front of the skirt slightly raised, I still don't know if we would see the lower portion of her crotch and it seems a little distracting in it's current positioning? When I follow her torso down from her breast, toward her hips, it appears it would be further back, and also higher in position. Mainly because the torso is giving the impression that she is bent over more at the waist. This is also giving her an unbalanced feel, if that makes sense? - Like if you brought her left leg forward, (
similarly to how you have done with her hands) that would not only fit the pose, but give her better overall balanced feel. ... But again, these are just my opinions on it, so I could be wrong!
Try standing in her present pose, and see what ya think