Revealing mistake: When Antonio Banderas shoots the guy with the broken ankle at the beginning of the shoot-out on the roof near the end of the movie, he falls off. Slow-mo his fall and you'll see the air mat he's suppose to land on, it's a huge evenly raised lump in the sand about a foot high and surrounded by white rocks. He even sinks into it when he lands.
Continuity mistake: When Selma is stitching up Antonio after the knife throwing scene, she is seen on the bed putting on a band-aid, then reading a magazine, then tightening the bottle of medicine that she put on his arm. All while Antonio never moves.
Continuity mistake: At the very end when his girlfriend picks him up, Banderas throws his guitar ahead of him. But in the next shot it's underneath the car. He had to twirl around to throw it, but it only went as far as the car he's standing next to?
Continuity mistake: The number of knives on the knife thrower's chest holder change throughout the scene.