Actually I just need help w/a small project

I have a pattern in the form of a mundane rectangular image. What I want to do is transform the image so that it looks like this rectangular pattern is a ribbon that was twisted around to form something resembling an infinity symbol (or a figure-8 if you like). How would I go about doing that? Is that a simple enough job?
The s/w I have to work with isn't very much, but I could make use of the ubiquitous Photoshop.

can you show a visual example? help us understand.

Well, not a perfect example. But can you imagine a cause ribbon with the ends tied together?
At this point, I'd be willing to accept half-assed variations. I've had a very hard time finding support, and something that just looks nice would be better than nothing. But not a cause ribbon! This is to appear at the top of a wedding invitation.