I finished this up awhile ago, but hadn't posted it because...well, real life is busy.
It finishes at approx. 24x18 inches. I think this side is up, but I am still not sure. The squiggles were improvisationally pieced with various shaped wedges. Then I turned under the edges and appliqued them with a zigzag stitch to the white background.
I added a flange before sewing on the binding. I love the look it gives - like a mini double border.
Baby is crying...time to go! :)