I’ve constructed any characters I’ve done using the simple principal of
movieClip - character
movieClip - head
movieClip - body and neck
movieClip - right arm
movieClip - right hand
movieClip - left arm
movieClip - left hand
movieClip - right leg including foot
movieClip - left leg including foot
as far as structure of character goes. From there, if you’ve set up your center points correctly you can choose to go with motion tweens, or a/s based movement.
I’m far too unskilled to go into the actual animation process. I would suggest going to www.moock.org and checking out anything you can find on the “Gwen” animation he made. He describes in some detail the process of setting up different aspects of the character, including the various face frames.
Sorry… but that’ all the advice I got.