A mandala is a visual depiction illustrating how a person (or character) sees the world around them. The mandala is typically separated into three sections (but they are not all this rigid in design): the inner circle, the middle circle, and the outer circle.
The inner circle illustrates the inner being of the character. The symbols chosen should include the character's inspirations, beliefs, or a character trait.
The middle circle should is the largest part of the mandala. It should include symbols which represent the character's challenges, goals, dreams, life lessons learned, victory, or any changes the character undergoes (in dynamic characters).
The outer circle contains direct quotes (words or phrases) which connect to the character being identified.
You should pay attention to color and symbolism of animals and objects used in the mandala.
Mary Maloney, the protagonist from Roald Dahl's "Lamb to the Slaughter," is pregnant, happy with her life, and a murderer. A mandala representing Mary would illustrate her inner character (who she is inside), what she learns or succeeds at, and quotes which illustrate her character.