Facial Expression.

Marjorie Ferguson. (1980's)
Ferguson managed to identify 4 different types of facial expression on the front cover on British Woman's Magazines.


Chocolate Box.
+ Half/Full smile
+ Lips together/Slightly parted
+ Teeth barely visible
+ Full/Three quarters of face to the camera 
Invitational.
+ Emphasis on the eyes
+ Mouth shut with hint of a smile
+ Head to one side or looking back to the camera
Super-Smiler
+ Full face
+ Wide open, toothy smile
+ Head thrusts forward to chin thrown back
+ Hair often wind blown
Romantic or Sexual
+ Includes male/female 'two somes'
+ Dreamy
+ Heavy Lidded
+ Overtly Sensual


Trevor Millum. (1990's)


Seductive.
+ Similar to cool/Level
+ Eyes less wide 
+ Expression is less reserved but still confident
+Milder
Carefree
+ Nymph like
+ Active
+ Healthy
+ Vibrant
+ Outdoor Girl
+ Often Smiling/Grinning
Practical
+ Concentrating
+ Enagaged in business in hand
+ Mouth Closed
+ Eyes object directed
+ Sometimes a slight frown
+ Hair often tied back or short style
Comic
+ Deliberately ridiculous
+ Exaggerated
+ Acting the fool
+ Pulling Faces
Catalogue
+ A neutral look of a dummy, artificial, wax like
+ Features may be in any position but most likely to be with eyes open wide and smiling
+ Looks remain vacant and empty with personality removed


:)