Nicely done as expected from you. However, I see some points for improvements.
In Orin sketch, the placement of her right eye is in awkward angle and width. This gives some sort of contorted feeling to her face, I would widen it and bring it down by few mms.
Also, the jaw and neck joint looks twisted as if her neck got snapped and glued back together. Shift the left shoulder upward a bit or better yet, draw new left section for the neck in more
angled fashion. Lastly, move her left hand up by few mms, for currently the place defined by her shoulder and hands are quite distorted.
In the second sketch, the placement of navel is little too low. Move it up by few mms. In addition, shift the left nipple right. Lastly, the area joining breasts and shoulders gives some
weird feeling that I can't put my finger on; maybe I am seeing things.
Anyway, the overall quality is promising. By the way, would you please update as often as possible?