First...you have to practice your 'evil' laugh :D
Thinking...ok send away to acme to get an invention which will work with your evil plan to get your nemesis with..
rape, drug dealing, pimping for starters.
Firstly choose some mythical god to give divine affirmation for your actions.
There's only more than 3,600 to choose from.
Yes go to the nunnery and rob it.
Switch the regular and decaf coffee at work