Start with your feet shoulder width apart and the dumbells at shoulder height, with your palms facing you
Slowly raise the dumbells into the air twisting as they go up so that the dumbells meet each other above your head with your palms eventually facing forward
Now slowly lower and twist the dumbells until they are in front of your chin with your palms facing you
Repeat steps 2 and 3 until you can no longer maintain correct technique
Tips
The twist should be a gradual twist on the way up and down
Lean back slightly and raise the dumbells just in front of your face