A bit o' movement

When I started this drawing the head was basically as you see it.  However, the model moved to the point where the neck is nowhere near where the head was at the start, same for the hair and to a degree his ear.  The shadows had moved by the time I got into the finer bits of the drawing.  I am disappointed in the finished image because I really liked the starting point.  Alas, the hazards of life drawing.