I've been asked quite a lot about how I make my animations seem "smooth".
Beyond all the principles and theory of animation, there is one very simple thing required to get your movements looking more crisp:

MORE FRAMES

Yep, that's pretty much it.
Just create more frames.
Instead of drawing 20 frames at 10 frames per second.
Do 40 frames at 20 frames per second.
Does this mean twice the work?
Well, I talk about that in this video (spoiler: the answer is no, not always).

Anyways, all of this really depends on what style you're trying to achieve, and how much effort you want to put into things.

  / nootall_