Find a nice, level, deserted parking lot. Get at an RPM where your bike has decent power(not where you will run over a flat spot in the power band) and then countersteer to bring yourself into a circle...

Lean a little bit more as you go around and you'll see it's pretty easy.. This way you don't have to worry about running wide in a corner: If you get in trouble just pull the bike up and go straight, no big deal.

When you move to high speed corners make sure you look through the corner, not at the side of the road.. Riders subconsciously tend to make their bikes go where they look.