Step 1:- Drive your car into an empty parking lot.
Step 2:- Double park your car wrongly on the line separating the two parking lots.
Step 3:- For more Karma, park your car awkwardly taking up two handicapped parking spaces.
Step 4:- For even more Karma, the flashier the car the better.
Step 5:- Take a pic of the wrongly parked car.
Step 6:- Blur the numberplate on the car image.
Step 7:- Post this image on /r/pics with a nasty title bitching about the car owner. for e.g "Douche Bag Parking!!"
Step 8:- Profit!!!