Enter something unique. A new technique or unusual application of the tried and true.
Be sure your quilt is absolutely spotless. Go over each block and the back looking for stray threads etc. Then use a lint pickup roller to go over the whole thing again.
Pay special attention to your binding and corners. Sew in your miters.
Be sure to follow all the directions and instructions from the show.
Hang your quilt after you put the sleeve on to see if anything needs blocking to get it to hang flat.
Watson