Animation isn't necessarily bad but honestly this is the worst format to actually view this in.

If the images were scanned, or even photographed then edited to fit into the frame properly this would view so much more naturally.

Additionally the animation overall lacks a lot of easing, movements just kind of happen with no real force or momentum behind any of them. I recommend reading up on the 12 principles of animation.

A lovely attempt with some very solid artwork, but clearly needs improvement.