So I finished the Pinwheel Sampler on time. I would have preferred not to bind by machine, which I feel is my weakest part of quilt making, but I only had so much time available. It measured about 73"x55" and was machine quilted in a large meander.
I donated it to the silent auction fundraiser and in a small crowd, it sold for $70. I am pleased with that.
Here's the final picture. I used PS I Quilt's Pinwheel Sampler pattern.
Thank you all for your help! :)