Staging

Like in live action performances, how a scene is staged in animation is important. Many of the rules of staging characters on stage or screen (such as good guys entering the scene from the left, villians on the right) also apply to animation. The concepts of close-ups, long shots and medium shots apply also to animation.

When planning an animation, its a good idea to plan it like a live-action film. Don't overload it with lots of action, it'll confuse the viewer (unless you want to).