have someone take a video cam

and video you rolling by while you are pedaling the best way and hard as you know


then compare your body motions to that of the pro peloton. adjust accordingly.

you will see that 2 pros side by side may have different pedal styles, but also
there will be things common they all do. one of them is smooth circular action...

so, emulate those who already pedal efficiently and you'll be good