USE THE FACE SHAPING TOOL
The various options found in the Face Texture Tool palette change the look of the face by changing only the texture of the face, but you can change the face also by modifying the shape of the head model. This is accomplished using the Face Shaping Tool palette and the Face Preview palette.

Using the Putty Tool
The Putty Tool is selected by default in the Face Shaping Tool palette. It allows you to sculpt the current face by dragging in the Face Preview palette. When you first click the face, the vertex closest to where you click is selected and appears as a green dot. With a single vertex selected, you can drag the vertex to a new location. When dragging a vertex, its movement is made based on the current camera view. You can use the camera tools in the upper-right corner of the Face Preview palette to rotate, pan, and zoom the face camera. If you make a mistake, you can remove all modifications using the Clear Morphs button located under the Putty Tool.

Pinning Vertices
As you drag a single vertex with the Putty Tool, adjacent vertices and body parts are moved along with the vertex. For example, dragging a vertex in the forehead region also moves the eyebrows. If you want to keep a specific set of vertices positioned relative to each other, you can use the Pin Tool to click the vertices that you want to remain in position. Pinned vertices are displayed as red dots, as shown in Figure 9-18. The Clear Pins button under the Pin Tool will remove all current pins.

Setting Exaggeration Limits
If you want to set a limit on how far face vertices can be deformed, you can use the Exaggeration Min and Exaggeration Max parameters to set limits to the face deformation. If you try to move a face feature that has reached its boundary, the deformation will still stop.

A good place to use Exaggeration limits is to prevent the face from collapsing in on itself.

Using the Caricature Parameter
The Caricature parameter emphasizes any existing deformation to a greater extent. This is helpful for creating cartoon-like faces. Negative values can be used to de-emphasize a particular feature. Figure 9-19 shows a figure with an over-emphasized nose and chin that was created by increasing the Caricature value.

Making Symmetrical Deformations
To the right of the Exaggeration parameters are options for using morphs. When the Symmetry option is selected, all deformations applied to one-half of the face are mirrored on the other half, but when the Asymmetry option is selected, you can change one side of the face differently from the other.