The head is a coat-hanger wire frame. It was coarsely modelled over a set of views of the Alien's head enlarged to the right width and height (about 4x). Chicken wire is overlaid onto the top of the wireframe. A jaw is fashioned from a coat hanger wire and hinged into the interior structure. Duct tape to loft between open sections.
Warning! Chicken-wire and cut coat hangers can have sharp edges.
Inside the head a duct-taped foam 'hat' insert is placed.
The head is paper-mache'd. To get it extra smooth, lightweight spackle is put on top, then sanded down (use a mask!) when dry.
Cardboard with the outer layer removed forms the corrugated sculptures on the side. You need to peel the outer later of once side off to reveal the corrugation. Dryer hose, cut down the middle, forms the 'hoses'. These structures are hot-glued onto the side of the mask.
The jaw is pulled shut with a rubber band that is tied in much the same place the muscle that closes your own jaw connect to the skull. Experiment with the tension. The jaw is opened by snaking a thin string downward the wearer can pull downward on. (see animation on next page).
The inside of the head has a Lego motor animated tongue that extends in and out. It is covered in black stretchy cloth that is attach to the end and base of the tongue.
The teeth are cut out plastic, spray painted white, then hot-glued into the head.
The entire structure is painted with black glossy paint.