The quilt is gorgeous! It sure looks as if the rod you've hung it on is sagging under the weight. That wouldn't happen at the show. It looks as if the distance between the rod and the structural line behind it increases as you go from right to left and then arcs back upward as you continue to the left edge of the picture. It could just be the camera angle, but it's definitely something to check. I've marked the picture here to show what I mean. The black mark on the left ends where I think the rod is, and the distance is clearly larger than on the right. You could verify this if you measure at the edge and the middle from the ceiling down to the rod. It will not hang flat if it's not on a perfectly straight rod.
Best wishes for your entry! It's a showstopper!