my former Team in Training coach called peddling with your toes, "Sissy-la-la" peddling. I found that very funny and it was also a big problem of mine when I first started riding. We'd say, "she's doing the Sissy la-la," and the other person would laugh but would quickly correct their form. No one wanted to be doing a "Sissy la-la!" . . now I only seem to have this problem with my left foot but ususally keep my heel down on the right . . there's always room for improvement! HA HA