YOU SAID:

The book are on my legs.

INTO JAPANESE

本は私の足の上にあります。

BACK INTO ENGLISH

The book is on my feet.

INTO JAPANESE

本は私の足元にあります。

BACK INTO ENGLISH

The book is at my feet.

INTO JAPANESE

その本は私の足元にあります。

BACK INTO ENGLISH

The book is at my feet.