If you don't like a design in your contest, you can decline the design which will remove it. This indicates to the designer that the design isn't on track with what you're looking for.
To decline a design from your contest, simply click the ‘Decline’ icon below the design, as shown below.
Made a mistake? You can bring a declined design back. Just find the design you wish to restore by changing your view settings to ‘Declined’ designs.
Then simply click the ‘Restore‘ button below the design and voilà, the design is back in your contest.