Portrait
An artistic representation of a person, focusing on the face and its expression.
Eyeline
The line halfway between the top of the head and the chin.
Nose base
The point that is halfway between the eyeline and the chin.
Mouth placement
Located about one-third of the way down from the nose base to the chin.
Hairline
Positioned about one-quarter of the way down from the top of the head to the eyeline.
Bilateral symmetry
A condition where both sides of the face are nearly identical.
Radial symmetry
Symmetry about a central axis
Guidelines
Horizontal and vertical lines used to accurately place facial features.
Shading
The technique used to add depth, dimension, and realism to facial features.
Value range in shading
A range of 3-5 values used to depict highlights, mid-tones, and shadows.