Use of 3D to Animate Heads in After Effects

Here is another approach to animating heads for animation in After Effects.

motion track head movement to null 1
make all objects 3D
make new null, position as pivot point, name "rotator"
add expressions to "ratator" X Rotation and Y Rotation
parent layers to "rotator"
arange objects on Z plane


"rotator" X Rotation expression:

0-this Comp.layer(null 1).transform.position[0]


"rotator" Y Rotation expression:

0-thisComp.layer(null 1).transform.position[1]