>> *Can anyone explain why the head did not look at the camera position and as a result, at the viewer of the image?*

Okay, a quick lesson about joint parameters and the Point At function ....

Each joint has a center-point and end-point. Take the eyes, for example. An eye's joint is centered (green cross) inside the eye (green cross), and ends (red cross) outside the eye. If you drew a line from center to end, it would pass through the pupil, in the direction the eye should be looking.

That's why you can use Point At with the eyes ... the Point At function aligns an actor along its joint.