How can I pedal in circles?
A technique which may help you get a more efficient pedaling stroke is an exercise called isolated leg. With your bicycle on a trainer or on a slight uphill, unclip your left leg and pedal using only your right leg for 30-60 strokes. Then switch and do the same for your other leg. This exercise will give a very natural feel to how your legs should be rotating to achieve an efficient pedaling stroke.