Rule of Thirds with a dab of Value
Error: The water fountains merge in a undesirable way. The error is mergers
Framing: these boys inadvertently frame the devil mask in the (almost)center of them
Angle: a dramatic angle to exemplify the flag and poster
These random girls represent Repition.
This beautiful Sweetheart costume is the Strong Subject
Error: Blocking out body parts
Selective Focus, regardless of the chairs and the trahscan the boy is still the star of the photo