Things you will need:
3. An obscene amount of the darkest beer (other substances may apply)
4. An unhealthy disposition
Step one: create a deadline to draw your comic, now, and this is important, have a total disregard for the passing of time. As your deadline gets uncomfortably close consume your beer in a sheer panic. This is not because you are about to actually MAKE the comic, but rather because the deadline is becoming too stressful and it is important to be relaxed when you procrastinate.
Step two: If you have done the above correctly, you will now have twenty minutes to make your comic. A Mr. Square comic, however only takes seven minutes. Continue procrastinating. Ideally you should now have seven minutes to create a comic at a high speed run using every minute efficiently. This will not be the case however, because you actually have two minutes before it is due. You now have a sufficient amount of loathing and utter panic to proceed. When you are finished relax and never look back, you may now rejoice that you have plenty of time to procrastinate before your next emergency.