The Knight of Cups represents romance, beauty, charm, and imagination; reversed, it means moodiness, jealousy, or unrealistic expectations. I chose Flitter for this because she strikes me as a very free-spirited and romantic individual; perhaps even a bit childish at times, to her sister's annoyance.

There isn't much in this card aside from the main figure — that emptiness is a symbol in and of itself, a sort of blank canvas to be filled in by the Knight's creative powers. She is also moving freely and gracefully, giving the appearance of tranquility and freedom.