Postbit Background help?

I am trying to add postbit background to my forums using a plugin called profile picture as explained in the attached link. However I can't get mine to work so any help would be appreciated lol...

This is what Im trying to accomplish



https://community.mybb.com/thread-215732.html

as I stated in a comment on that post I do what they say and it calls for it but it adds a dateline = to end of the profilepic therefore not showing picture. Please help lol