Facial Expressions

Hi everyone.  I have been working lately on drawing facial expressions for a graphic novel that I am working on.  I believe that the face is what we are naturally drawn to and it is important to draw the different emotions well.  The book I have been using for reference is Facial Expressions, by Mark Simon.  The book contains actual photographs of people making different facial expressions.  I prefer the photographs rather than artist sketches of the emotions.  This way I am free to express them as I see them rather than copying the artist.  In the future I will post some of my sketches from the photographs.