Hi.
Wow!!! It seems guite evident to me that you had to invest a lot of effort to create it, which is visible in the result. Because it resulted in a fantastic artwork.
I love this smooth animation. I didn't even know After Effect had such a great tool.
In terms of technique, it is very skillfully done.
Good luck! :-)
thank you for your words! yes they included the puppet tool after CC version, you can create a character template and later animate it with that :D is very useful for 2d animation