Feels like the character looks so much more happy than he sounds, maybe have a more matching energy in the voice? Or a less overly energetic face. :) I didn't get what he was saying at all btw, but fortunately there is the description! Animation looks good. Also, on the vocals, there seems to be a noticeable echo - recording in a booth or in a room with carpets/curtains/etc could help to reduce that, or using any kind of dampening material around the mic. Keep it going!
-cd-