For one of the classes we have been going through setting up blend shapes and set driven key for a face of a character.

I have been enjoying setting up this rig and experimented with creating a blend shape to add slight animations and body modifications to try and simulate a more natural movement.

with this i experimented with created a blend shape for the characters peck so when the arm is lifted up get some muscle movement of the peck deforming. I experimented with driving this blend shape with the shoulder controller.

This worked for only the direction I keyed the blend shape to, but turns out was jumpy and constantly switching on and off.

This lead me to research corrective blend shapes within Advance skeleton.

I thank the person/people who created advance skeleton the process of creating a corrective blend shape is greatly reduced