28 Principles of Animation

Here is a list of things (principles) that appear in these drawings, most of which should appear in all scenes, for they comprise the basis for full animation

-Pose and Mood -Shape and Form -Anatomy -Model or Character -Weight -Line and Silhouette -Action and Reaction -Perspective -Direction -Tension

-Planes -Solidity -Arcs -Squash and Stretch -Beat and Rythem -Depth and Volume -Overlap and followthru -Timing -Working from extreme to extreme

-Straights and Curves -Primary and secondary action -Staging and composition -Anticipation -Caricature -Details -Texture -Simplification -Positive and negative shapes

That's a part of an article by Mark Kennedy, the full version can be found here: http://www.animationarena.com/principles-of-animation.html