YOU SAID:
When the party ends, I smile
INTO JAPANESE
パーティーが終わると、私は笑顔
BACK INTO ENGLISH
When the party is over, I smile
INTO JAPANESE
パーティーが終わったら、笑顔
BACK INTO ENGLISH
When the party is over, smile
INTO JAPANESE
パーティーが終わると、笑顔
BACK INTO ENGLISH
When the party is over, smile
That didn't even make that much sense in English.