People

A few drills can define an eye, nostril or mouth corner, so small changes affect the expression quickly. Faces look best when they occupy a meaningful part of the picture instead of being tiny figures in a large scene.

Usually. Several people divide the available grid between multiple faces, hands and clothing details. A single portrait gives each feature more space and is generally the safer choice when likeness matters.

Look at the size of the face, contrast around the eyes and mouth, and whether the background competes with the subject. A strong, well-lit face is much easier to translate cleanly than a distant or shadowed figure.