Interesting. Not bad for a first attempt. The thing with Calvin and Hobbes…they are probably one of the BEST posed characters in the world. You look at Watterson’s drawings and they are full of life, motion, and expression. Really good animation reference actually.
I can see that you put a lot into this, however, I think in the future you should really study the panels and try to caputre the essence and dynamic motion they have. You could benefit from doing multiple shots as well as opposed to one long shot.