Final answer:
Pisanello's Head of a Horse is a detailed and realistic representation of a horse's head, showcasing the artist's skill and attention to detail.
Step-by-step explanation:
In Pisanello's Head of a Horse, the drawing was designed to be a finished piece of work in itself. This is evident because it is a detailed and realistic representation of a horse's head, showcasing the artist's skill and attention to detail. It is not a rough sketch with incomplete details or a preliminary drawing for a larger artwork. Additionally, it is not a digital artwork created using computer software, but rather a traditional drawing created by hand.