Introduction
There is a famous quote which says The eyes are the window to the soul, and its through them that we'll make our characters express most of their feelings. We must have a tight control over how our character's eyes appear and behave on screen, because that's where our viewers would naturally pay more attention to.
Subtle things such as the eyelids shape or the size of the pupil can make a big difference when you want to make the audience believe that your character is alive. We're going to see how to create rig features to enable a good amount of control for the animator. The objects for this small region of the body can be a bit tricky to set up, requiring lots of bones and constraints to achieve good expressions.