YOU SAID:
I smile and move back to kiss your neck
INTO JAPANESE
私は笑顔し、あなたの首にキスに戻る
BACK INTO ENGLISH
I smile and go kiss your neck
INTO JAPANESE
私は笑顔し、あなたの首にキスを行く
BACK INTO ENGLISH
I smile and go kiss your neck
That didn't even make that much sense in English.