From Geomancy.org comes a great little tutorial on the why and the how to draw labyrinths.
Here's a teaser: I know this is cyberspace, but I beg you to draw some labyrinths with paper and pencil (you remember those crude stick-like writing implements?). The construction of a labyrinth is a lesson in sacred geometry. If you do it just with your brain and not with your hand, you won't really gnow what it is all about.
Please draw this labyrinth at least ten times! Look for the feeling you get when you draw a labyrinth and that point when you don't have to think about it any more, and your hand gnows what to do 'by itself'. Gnowing is consciously using both your analytical/left-brain and your intuitive/right-brain assets equally.
Need to see that animation in slow motion? Here ya go: