When we were doing 'Freaks and Geeks' I didn't quite understand how movies and TV worked and I would improvise even if the camera wasn't on me. I thought I was helping the other actors by keeping them on their toes but nobody appreciated it when I would trip them up. So I was improvising a little bit back then but not in a productive way.
What could be more beautiful than a dear old lady growing wise with age? Every age can be enchanting provided you live within it.