So, I did it. I excluded the arms 'cause I might make things look confusing. I'm not quite used to drawing directly on a tablet. I just use it for painting.
One - I used ovals to place the head, ribs and pelvis, then turned the ribs and pelvis into boxes. Ideally, ribs and pelvises are represented by boxes. If you can't get the hang of it, then use ovals. I generally prefer ovals better (At least for ribs). With the pelvis, the corners of the box represent the points of the ilium crest.
I also fixed the placement of the nose, ear, and eyes. I did stop the line of the top of the ear at the wrong spot. It should be a bit further back.
Two - I fixed my boxes. I added the lines for the pelvis, and added the breasts. This is how the breasts should sit naturally
Three and
Four - The way I drew the ribs is a bit off, but you can see how one would start to fill things in. The back of the hip/butt should touch the back corner of the box. I moved down the breasts and readjusted the pelvis to be in the right place.
So, yeah. This is generally how the body should look like, give or take a few things. I'm more showing where everything's placed versus the full end result (you wouldn't be drawing in the ribs and abs exactly the way I did). When in doubt, look at yourself in the mirror naked and observe yourself (assuming you are woman), or look at nude photos of women to understand the woman form.
When it comes to line art, look to comics and observe how they do it. Right now the way you have it is very random. Also, pay attention to how the wrists tapers in to the hand. Her wrists should not be that big unless she has massive man hands.