Freehand circle, hmmm...
Well, that seemed an interesting project, really is very complicated draw a circle only with your hands and a brush, but what has come to this presentation is not really acceptable proof with make a perfect circle.
First, to draw a head (have to be mind circular, not any), you must take several hours and too difficult for anyone.
Second, would elaborate on smudge this drawing, because knowing that it is impossible not to leave traces after erasing, then can this way not wake up right.
Third, thus not erasing right, the circle does not perfectly. Therefore, having to lighten this process, since this video does not give the correct steps to draw a circle (Yes, in my opinion, you still must have objects this way to draw as perfect).
The graphics, slides and music are ok.