TRSE: How To Draw Tutorials:
Drawing Angled Back View of a Female 'Full-Figure' Character.
Step 1

   Drawing the Angled Back View is very similar to the drawing the Angled Front View but that view is trickier due to the fact that we have to work with the curve of the neck, back and butts. I just thought of something as I type this (too late to add it to the diagram above). There is a way that may help make the positions of the head in respect to the back of the body bit easier. You can do a light sketch of the face, and you can use that to help position the neck and the shoulders.
    Let's start by drawing the vertical lines to help keep the figure straight and horizontal line to mark the head (and eyes).