I'm sorry. We're not allowed to use the same concepts as another designer. If it's something you as the contest holder suggests FIRST, then we are all allowed to do it, but if a designer comes up with it first, it is their's to develop and work on for you. So, you see, we were all free to do infinity symbols as butterflies, but we had to try to keep them from being done in the same way as someone else's.
If I come up with another concept or design that is different enough from the first ranked ones, I'll submit it. Thanks for all the feedback and suggestions throughout the contest.