YOU SAID:

you will both accidentally fall and move forwards after placing you foot on the peel of this banana

INTO JAPANESE

あなたはこのバナナの皮の上に足を置いた後、あなたは両方とも誤って落ちて前進するでしょう

BACK INTO ENGLISH

After you put your foot on this banana peel, you will both fall by mistake and move forward

INTO JAPANESE

あなたがこのバナナの皮にあなたの足を乗せた後、あなたは両方とも誤って落下して前進するでしょう

BACK INTO ENGLISH

After you put your foot on this banana peel, you will both accidentally fall and move forward

INTO JAPANESE

あなたがこのバナナの皮の上にあなたの足を置いた後、あなたは両方とも偶然に落ちて前進するでしょう

BACK INTO ENGLISH

After you put your foot on this banana peel, you will both accidentally fall and move forward