the way i do it, i draw a doll and then i draw clothes on top of it. nipple placement is important to draw in too in my opinion, or at least think about; it helps visualize and shape the breasts on the chest. don't know how you're wanting to perceive/portray mado either.
don't know how plump you want the cheeks either… remember to think about the shape of them when you redo the lines and shade.
as far as the head goes, i try to keep my head shapes in check by imagining the face as a mask. it helps to keep the hairline in mind for me, and to position the facial features three dimensionally in space.
i'd shift the eyes in a little closer but that might be letting the standard of beauty intrude on the drawing… if you want to move them in closer for an average distance from the eyes then that's what i recommend, but i think it looks really nice as it is. again, i'm not exactly sure what you're trying to get onto paper/what traits with which you're wanting to portray her having.
the green on her chest is a general guideline for space to take up… i didn't go much further than the size
if you want to tuck her arms in a little more make sure to tuck them farther behind her ribs, i was having trouble with it myself…
be careful with letting her become :un-animated"… lifeless, i mean
the way i try to draw people is, i always keep in mind people are never at a full stop, no object is, especially not a living one. each snapshot of a picture is a moment in time, be it in subtle movement or with tons of energy
this looks absolutely fantastic and i personally would keep doing what you were doing, the head being very tall was the only problem i really saw, i think you;re doing very well with the shoulders and im sure the chest wouldnt have been hard for you to add in (:
absolutely fantastic piece and i hope to see the finished product later.