This job demands full attention to details. Details that are in the gestures of our characters. Any word about rules and recipes of how to capture such emotions would be a lie. There is a lot of effort though, based on empathy and on the experience of knowing how to look. This is the director's role.
The plot carries a beautiful twist, an inversion, it shows the eldest is not necessarily the wisest. The fear of our finitude causes anxiety and anguish. There is also the fear of pain. The fear of whatever will take place at the chemotherapy session.
Knowing we can face that through the eyes, strength, and words of a child that has already been there, makes this a unique piece.