Athena represents wisdom, strategic warfare, and civilization in Greek mythology, often paired with the owl as a symbol of knowledge and vigilance. The Medusa head on the shield references the Aegis, a protective emblem meant to ward off enemies and evil, giving this design a dual meaning of intellect and defense. People choose this subject for its association with strength tempered by reason, rather than brute force alone.
Where it sits
This is a tall, roughly rectangular composition with a strong central vertical line running from the helmet crest down through the figure to the shield, making it well suited to the back, spine, or a large thigh panel. The radiating light lines and wing spread need width as well as height, so a forearm or calf would crop the halo effect or the owl's wing badly. Shrinking this below a large scale would lose the fine etching on the armor and the detail in the Medusa medallion.
Making it yours
Ask an artist for any of these.