Result
I enjoy working at this animation for facial expression very much. Comparing with the motion in last version (08 | Rendering And Nuke Color Correction), the squarely mouth problem was solved. All facial expressions are able to deliver the emotion accordingly. Even the smile one is still not since enough, it may needs much more mesh for me to set keyframe on cheeks and eyes, which is a long process for me to study on.
The whole progress is challenging but with a steep learning curve, especially for the skin area at the neck. It is not easy to define which is which to separate the upper part and lower part in paintweight tool. And when the motion is too exaggerated, it got distorted, which is obviously not the thing I want to see.
Reflection
At this self-practise, I need to bear in mind with uncanny valley as well. As my model is a human-like one, my motion is tend to be as humanize as possible, with other elements not quite finalized yet. It became a sense of unease when I reviewed my result. But still, it is quite a nice way for me to practise the the facial expression motion with shape editor in Maya.