The head may also hang low for a sad character, or may look around if the scene requires it. Animating a walk Now that you understand the underlying mechanics, you can attempt to animate a walk. The first thing you need to concern yourself with is the timing of the walk. That's not an easy question to answer. All of these factors will determine the time it takes your character to take a step.
Larger characters tend to walk slower and smaller characters walk faster.
In general, men have slightly slower gaits than women, and sad people walk slower than happy people. One nice thing about working with a computer is that many programs allow you to scale the length of your animation. If your character is walking too slow, you can speed him up a bit by reworking the keys. The most important thing to remember when animating a walk is to keep your character's feet firmly locked to the ground. The friction between the feet and the ground propels him forward.