Generic shapes correspond to the Generic channels used by the Actor Face settings to animate a head model connected to a motion capture source. See Animating generic channels.
If you do not plan to use an Actor Face to connect to a motion capture source, you do not have to create Generic shapes for your head model.
Use and the following descriptions as guidelines when creating Generic shapes.
Generic shapes
Mouth is closed, eyes are open, eyebrows at mid-level.
Jaw is dropped, teeth are open or do not show.
Mouth is open, teeth can be closed.
Mouth is closed, lips are pursed.
Left and right corners of the mouth in up and down positions.
Both eyes in closed, squint, and wide open positions.
Both eyebrows in up and down positions.
Left and right cheeks in up and out positions.
Both nostrils in up positions.