Personally i would of been more abstract with the face instead of having just a still image of the face in one position and just moving the mouth and eyes and so on, also seems as though you stuck with an either straight on or sideways view of your character which made it a bit boring to watch. One of the best things you can learn to do is practice drawing a head rotating, then you could of drawn the head moving into the different positions as opposed to just cutting to them.