YOU SAID:
I am looking forward to working with you.
INTO JAPANESE
皆様と一緒に働けることを楽しみにしています。
BACK INTO ENGLISH
I look forward to working with you.
INTO JAPANESE
今後ともよろしくお願いします。
BACK INTO ENGLISH
I look forward to working with you.
That didn't even make that much sense in English.