To create and animate an unmoving model, 3D Animators work from the raw product of a 3D skeleton. They must give the model highly-fluid movement, with its own autonomy. They must also make it convey emotion and give it the illusion of reality. In addition to injecting gestures, 3D Animators must also draw the character's expressions, work on the space, and even decide on the brightness and the shadows on their creations. All of this is done to make the animation as close to reality as possible.