YOU SAID:

Good head on your shoulders

INTO JAPANESE

あなたの肩にしっかり頭

BACK INTO ENGLISH

Head firmly on your shoulders

INTO JAPANESE

肩にしっかり頭を

BACK INTO ENGLISH

Head firmly on the shoulders

INTO JAPANESE

肩をしっかり頭に

BACK INTO ENGLISH

Keep your shoulders firmly on your head

INTO JAPANESE

あなたの肩をしっかりと頭の上に置いてください

BACK INTO ENGLISH

Keep your shoulders firmly on your head