When at first I came to deviantart and saw artists who would create commissioned images for a nominal fee I thought to myself, "Sure, it's a good idea, but is it often worth the kind of money they ask?"
Answer upon seeing images commissioned for people like this: "Dunno.... it LOOKS worth it!"
the trick is that you only sleep for 30 minutes at a time, divided by 5 1/2 hour periods of wakefulness. The thing is, as you stay awake and spend energy, there is a chemical that is gradually released in your bloodstream which is what makes you sleepy (I forget the name) and when you are asleep, that chemical gets cleansed out of your body. The cleansing, however, mostly happens during REM cycles, yoru deepest sleep (filled with the most vivid dreams) which your body technically only enters in about 2-3 hours after you started sleeping ad lasts about 1 1/2 hours.
by sleeping in this pattern, you are depriving your body of any REM sleep, which means the chemical barely gets cleanes out of your body, after about 3 days of this, you will be getting essentially high off sleep deprivation and it will be hard to stay awake for any length of time, if you power through like this till about day 8 (day 10 at latest) however, your body will realize that you mean business and will start kicking itself into REM sleep as soon as you go to bed. as a result, you will be getting 2 hours of solid REM sleep per day, and 22 hours of feeling completely wakeful and alert, ready to complete any task (gaming, drawing with a deadline, ect.) that you set your mind to.
Now, of course, there are risks with doing this. Sleeping is composed of many stages that serve different functions, such as repairing injured tissue, fighting off infections, consolidating acquired information, ect. Pure REM sleep allows you to rejuvenate your body with as little as 2 hours of sleep per day, but makes it much harder for your body to do the rest of those things, so it's recommended that if you are going to follow this sleep pattern (and take back those 80% of that third of your life you spend sleeping) you don't do it for longer than a month at a time, and do not start when you are injured or sick in any way (or recovering from a sickness).
that being said, I can only imagine how those extra hours of productive wakefulness can be precious to an artist such as yourself, so i hope the information I've provided you can help you at some point in your life double ^^.