Pick two objects (two photos, two video frames, or one object + one photo). In 2 minutes write:
Object A: likely function + 2 evidence clues
Object B: likely function + 2 evidence clues
One sentence comparing them: “A suggests…, while B suggests…”
A function: storage; clues: narrow mouth + large belly
B function: display; clues: taller neck + emphasized silhouette
Compare: “A suggests controlled access and capacity, while B suggests visual display and height.”