YOU SAID:
you need to get your not pretty face fixed
INTO JAPANESE
あなたはきれいではない顔を直す必要があります
BACK INTO ENGLISH
You need to fix a face that is not beautiful
INTO JAPANESE
あなたは美しくない顔を直す必要があります
BACK INTO ENGLISH
You need to fix a beautiful face
INTO JAPANESE
あなたは美しい顔を直す必要があります
BACK INTO ENGLISH
You need to fix a beautiful face
That didn't even make that much sense in English.