Principles of Animation
10. Exaggeration
Exaggeration is not extreme distortion of a drawing or extremely broad, violent action all the time. It's like a caricature of facial features, expressions, poses, attitudes and actions. Action traced from live action film can be accurate, but stiff and mechanical. Exaggeration in a walk or an eye movement or even a head turn will give your film more appeal.
11. Solid Drawing
The basic principles of drawing form, weight, volume solidity and the illusion of three dimensions apply to animation as it does to academic drawing. The way to draw cartoons, we draw in the classical sense, using pencil sketches and drawings for reproduction of life. 
12. Appeal
A live performer has charisma. An animated character has appeal. Appealing animation does not mean just being cute and cuddly. All characters have to have appeal whether they are heroic, villainous, comic or cute. A character who is appealing is not necessarily sympathetic – villains or monsters can also be appealing – the important thing is that the viewer feels the character is real and interesting. 
....Previous