A good start here
This is a neat animation, although I'd prefer to see some animation on the mouths a little more.
The first close up of the kid is a little freaky, but thankfully doesn't set the tone for the animation. He needs to change the shape of his mouth more, as when we make sound effects, we don't leave our mouths completely still like his was.
You've got the basic drawing off to a great start and in the future, you can certainly learn more advanced techniques.
I'll look forward to reviewing your later improved submissions...
[Review Request Club]