Take photographs of both front and side views at the very least under good lighting to get good detail and reduce shadows. Do not change the distance of the subject from the camera; you want to be able to match each feature between the two pictures. Use at least an 80mm-100 mm lens to minimize distortion, and zoom in to the head. In Poser, import the pictures as backgrounds for the different views; you can always switch backgrounds when you switch views. Zoom and position your Poser figure's head till it closely matches some reference point in the photograph, for example the eyes. Do that with the other view as well and don't change the camera settings thereafter. Once you've got all that set, load up some morphs and start fiddling away until you're satisfied with the apearance. You'll have to switch rendering modes frequently; I usually use the outline, the wireframe, and the full render modes to see what's happening. Also, you'll have to switch back and forth from front to side view to see what's happening too. It takes a lot of patience and experimentation with different morphs to finally achieve the look you want. Good luck!