There are a few areas where you could pull to the image a little more, but that only gets you from directly front and side and this model is going to be seen from so many other angles. But you can use your brush and hold it up to see if an angle is the same between your refference and your artwork. It takes a lot of staring at first.
Dark-elf Pics - herbertkikoy.info
One is showing that you need to break things up into shapes.