Healing mandalas

I'm learning how to draw mandalas. So far, all I know is that you start in the center and move outward. If you do something on the top, you do the same thing on the bottom. If you draw on the right, repeat it on the left. Beyond that, I know nothing! The hardest part is the initial measuring, I never get that right (so far). But they're fun and absorbing. I'm encouraged to know that Karl Jung drew one every single day for some years and found it helpful. I'm not there yet, I'm just at the having fun stage.