Please note, if a winner is not declared In the unlikely event that this happens, it basically means the contest ends without a winner being selected. The contest holder is unable to use your design or any other entry, since they did not acquire it from you. The contest will become locked after 14 days of a contest closing.
If the contest is guaranteed, and a winner has not been awarded, the prize will be shared amongst the top entries after 30 days of the contest closing. thank you :)