this is the first stage of my new head bases.
I had issues with my jaws hanging down a little.

my problem was I was having much pressure pull back on the jaw. It would be pulled back on the person jaw. causing it to hang down at times...
now the moving jaw is done on it's on elastics. and the head base is done on other elastics. instead of them being all tied together.

first 2 images are the base.
2nd 2 images are the eyes added. (3d printed eye sockets. with printed eyes that are laminated)
last 2 image is the basic shape of the jaw.