I took my replacement mouth puppet head into the studio, and shot some lip sync under a line tester. Here he is mid-flow:
 
I've made the puppet head with replaceable mouth for the lip sync! I'm quite excited by this, look at all the little mouths...
I made it all out of sculpey because of the fact that it's easy to sculpt with and bakes hard so that I had no chance of ruining any of the little mouths when animating.
I created a flat surface where the mouth should be on the head and lower than the rest of the face so that I could create mouths that would sit on top of this area.
I had the problem that the mouth looked obviously seperate from the rest of the face so I tackled this issue by giving my puppet head a nice moustache and bushy beard!
When placed on the flat surface, the mouths are now surround by a beard that covers the joing giving the appearance that the mouth is part of the head.
Here are the nine different mouth shapes i created. In Preston Blaires phenome series there are ten different mouths, however I didn't use the 'L' shape.
I also made seperate pupils which sit on the eyes with vaseline. This means I can animate them, giving my puppet more character.
Half blink eylids.
Full blink eyelids.
Now to animate!!