Ronnie Thompson from British Columbia was kind enough to send me this photo of a Floating Prisms quilt she longarm quilted. It was pieced by Marven Ecker. He asked her to create fireworks with the quilting, and I think the bursts are a stunning design in the negative space.
my post about the Floating Prisms pattern here, as well as the whole pattern as a free download on the Robert Kaufman site. The design is foundation pieced.