Goal: Get your dog to make a full circle to the right and the left
Like many tricks the dog starts in front of you. With a treat lure the dog's head toward his tail. Be ready to break it down if he bails off the lure. Keep luring until the dog makes a complete circle either to the left or the right. Now try it to the other side.
Each dog has a hard side and an easy side. Put a different name to a turn to the left and a turn to the right to be clear to the dog. You can starting putting a name on it when the dog is consistently doing the turns each way.