Possible Clues:

• He cut or edited to make slight corrections
• Squeeze for more cash to make improvements
• Make a poor shot into a good one
• Remove red eye, e.g.
• Paint a nick
• Slightly alter gag about university
• Concerned with caress, this should improve image
• Airbrush
• Correct, labyrinthine route north of Switzerland
• Alter a picture to give it a more desirable appearance