Here you can see how I refined the rough sketches and concepts along the top into the final three picture candidates I posted in the last WIP post. Of the three concepts, I ended up going with image concept #2, which further refined into the bottom three sketches you see in this picture.
To really nail the anatomy, I took my favorite version of the sketch, and started breaking down the perspective:
Perspective isn't just for backgrounds. The character also conforms to the vanishing points. If you look closely at the top image, you can see where her body used to be, and how it was reworked to follow the perspective.
Working from the bottom blue sketch, next I did a final clean pencil drawing, and then finished it with the inks and color. A lot of love and time goes into each of our images, as I hope these WIP show. :)