This might be a bit of a n00b question.
I'm trying out the Face tracking (detailed features) in AE to animate simple shapes. I know where to find a particular feature's point data in AE and that I have to use the pick whip tool to link it to element I want it to "follow", but I'm only managing to use it with a shape's Anchor point, while I'm trying to animate each vertex of a shape individually. I want the shape (here a diamond on the right eye) to copy the eye's actual behavior (diamond "closes" when eyelid closes, etc). I'm new to expressions. I might be taking the wrong approach to this. It doesn't have to be perfect just as close as possible.
Please help me Internet Kenobi, you're my only hope