I kept to techniques I'm familiar with, although did try piecing the balloon itself using a freezer paper technique, and have to say it came together well for me. It contains some raw edge applique, my pre-requisite faux trapunto and dense free motion quilting, although this time, only in a few spots. The hardest part was trimming the quilt down to the 16" square format. All in all, I'm very pleased with how it has turned out.
For more information and additional pictures, please see my post here.