YOU SAID:

Falling head over heels

INTO JAPANESE

かかとの上に頭を落ちる

BACK INTO ENGLISH

fall one's head on one's heel

INTO JAPANESE

頭をかかとに落ちる

BACK INTO ENGLISH

fall one's head to one's heel

INTO JAPANESE

頭をかかとに落ちる

BACK INTO ENGLISH

fall one's head to one's heel