Select a Single Visual or Make Strong Visual Connections.
A single visual can create greater impact than a bunch of visuals that are all competing for attention.
Don't be wimpy either. Make it a big, strong, dominant element of the page. Or, when using multiple images, tie them together by style or placement or some other method that gives them a connection, so they form a single visual unit. Learn more about using fewer images or combining multiple images (works with more than just mug shots).