you need a new WEBCAM !

First, if you want audience to focused on the clay you MUST make it looks sharp and clear, not blur like this. I think you used a webcam without short length focus. Try camera with macro or camcorder or webcam with focusable ring. These will make this animation looks better. :D

And you need more time to spended on this ;)

not bad for your first

First clay animations are tricky. If you continue to master smoother movements, they will get better I like it.