Surprisingly, a good rule of thumb for any criminal is to stay clear of any cardinal sin.
Lust - don't let your dick make any decisions for you
Greed - know when to stop
Sloth - go the extra mile or else it might bite you
Wrath - like lust, an emotion that can negatively influence your judgment
Pride - the best criminal and the perfect crime is the one nobody knows about, and overconfidence leads to errors.
Gluttony - excessive consumption raises suspicions
Envy - don't try to outdo someone else. He is known for a reason.