-reduced number of figures emphasises the importance of the moment making it easier to understand
-the near nudity of St Peter and the expression and awkward pose evokes sympathy
-recognisable iconography of St Peter , includes a grey beard, the large rock in the foreground .
-the strong diagonal of the cross in the foreground is bisected by the rope and crouching man helps to create movement.
-cropping of the shoulder additionally creates a sense of action and dramatic revision.