I was one day determined to learn ZBrush, so I decided to create a quick sculpture to learn the basics. The result of this learning is this model, which I have dubbed Old Man Oratio. The outline I set to myself was to create the bust of a humanoid in a caricature style. I was satisfied by the result, and textured it using Substance Painter.
Another accomplishment I was happy with was that I managed to successfully retopologize and bake the high poly model's details into a lower poly count version of the model, so that it can be used in a game without affecting performance.
Although not my initial intent, as I was simply randomly getting examples from the internet of old men with no specific idea in mind, the final result resembled a character from a classic Pixar short called Geri's Game.