Slightly more refined lip sync

Ron gave me some helpful feedback on my work so far, suggesting that I work on making the hair flap about a bit more. He also suggested that I add a few inbetweens to cushion the snap-back between "-JOY" and "it". I've added just one so far — I'm going to see if I can get in another to try and smooth it out a bit.

The hair movement's a bit choppy and there are still a lot of problems with volume and such, so I'll see if I can fix that up and refine it a little more.