Red door Phantom Hourglass how do you draw the symbol?

To draw the hourglass is simple, but tricky. You must draw it swiflty and small, yet not too small, yet not too big. It may require a few times, but you'll eventually get it. If you don't know how to draw the hourglass shape, it's similar to a figure eight. You now have access to the doors and defeating Bellum, the final boss. Good luck!