The vortex has two parts:
the lift and the drop
Practice the lift with a can
balanced atop the hand
Lift the elbow to bring
the hand above the head
Now practice hooping over
the hand near the lower back
Use the "can" technique to
lift the hoop above the head
Drop the hoop back to the
hips using the same hand...
...or by passing the hoop
off to the other hand
Make the move repeat by
passing the hoop back & forth
Turn the body in the 
same direction as the hoop
