In my opinion, I think that the idea of mouth animation should be dropped. If done wrong, it can very easily distract the viewer from the entire film. I suggest making more quality effective brickfilms before moving onto such a big step. Though do what you want. You never know how it's going to turn out, and that can also be a good thing 
(Though if you really want to make realistic mouths, trace over a normal mouth in photoshop, then try to mimic the different phonemes as best as you can)
EDIT: A little 'cheat' or guide of reference is the Glueface phoneme gallery: http://bricktrick.de/index-e-glueface-4.php You can use it as reference, or simply even use those. That's for creating phoneme mouth animation. The style Nick Durron uses is (IMO) quite easy, you just need a little experience with AfterFX. Though I prefer the phonemes over the masking due to it "blending" in more with the animation.
Last edited by Mason (December 12, 2011 (06:56pm))