YOU SAID:
Don't just sit around looking pretty.
INTO JAPANESE
きれいに見えるだけで座ってはいけません。
BACK INTO ENGLISH
Don't sit just to look good.
INTO JAPANESE
見栄えを良くするためだけに座ってはいけません。
BACK INTO ENGLISH
Don't sit just to look good.
That didn't even make that much sense in English.