Thanks Katie. Mason, so basically I used replacement mouths, In a similar method to how they did them for Paranorman, and i think Aardman did the same for Pirates. I had a set of mouths that were made out of an air drying clay that had a piece sticking out in the back that attached to a hole in the head. The a hardened clay was then covered with the clay for her skin tone and sculpted with each different mouth shape. In order to speed up time during the animation process, and try something new, I didn't smooth out the clay where the seam was. Instead I import the individual images into photoshop as an image sequence, so I can view it like the movie, but each of the images are able to be manipulIt then I use a the spot healing tool to get rid of the seam and the clone tool to fix any mistakes and make sure it is consigroom from frame to frame. All in all it maybe took a little but longer than if I smoothed it out in the clay, but it kept the clay cleaner and allowed for more concentration on the performance. It was a very interesting experiment. I know Mason has seen it, but if you look at my demo reel on YouTube you can see some shots without the cleanup.