Yes, very easy.
You nest all facial features inside the head symbol, run the head symbol in sync with the character timeline and tween the positions of facial features inside in sync with some rotation from the outside to achieve the effect of 3-dimensionality.
Here is a step by step guide to rigging for Flash: https://flash-powertools.com/character-rigging-for-flash-animation/
I appreciate the link, but could you explain how I'd do the rotating? I tried using the 3d rotation tool, but it doesn't work on graphic symbols. Thanks again for the help.
Inside the head you have all facial features as symbols, each on its own layer.
You move them in relation to the head oval in a way that simulates parallactic displacement and three-dimensionality.
You combine this with subtle rotation of the whole head symbol on the outside so that it looks organic.
Try with something simple first.
Here is a small animation test that I've done, employing this technique:
It works and is very easy to do.
I get it now. Thanks man, this definitely helped.
That's great, mate!