first step - position yourself in front of the target house. pretend you're waiting for someone.step 2 - wait untill all the lights in the house go dark. when the time is right, slightly knock on the door to make sure everybody's fast asleep.
step 3 - proceed to urinate on their front door. make sure you aim at a right angle so you don't sprinkle your shoes.
final step - slowly leave the scene so you don't arouse suspicion.