Go to the link below and read the short excerpt on drawing upsidedown. Then ask yourself the following questions; what was the benefit of drawing upside down? Once you started drawing, did you find yourself interested in how the lines fit together? Or did your left brain interfere with the progress of your drawing and it seemed to take forever? If you did not experience the shift of when your brain goes into a different state such as; losing track of time, or you feel like you do when you are daydreaming, then your left hemisphere was still interfering with your ability to draw. Once you let the left brain rest, you will find that you can create a self-induced state of consciousness achieved through a different form of concentration.
http://www.learn-to-draw.com/drawing-basics/06-drawing-pencil.htm
