Those of us who are interested in producing a portrait of another human being are usually so absorbed by this prospect that every other kind of artistic endeavor pales by comparison.
Portraiture can be most frustrating, but believe me it is most rewarding!
Although we all have two eyes, a nose and a mouth, every person is unique. Not only unique in likeness, but also in so many areas not visible to the eye. This uniqueness is what the artist is being challenged with. Can the artist capture the personality, likeness and essence of a peson on a two dimensional support?
Most rewarding it is to plunge right into such a challenge and see the face of a child or adult or elderly emerge out of the canvas! Wow!