The Spoonflower Handbook is here!
The checkered playing surface measures 6.5" wide by 8" tall; designed to be affixed onto any board (6.5" to 8") by (8 to 10") with extra to wrap around the board onto the back. The game pieces are approximately .75" width. Nicer pieces are available at Shapeways, here.
We are planning on taking this game to Protospiel this summer. And unless the experts there don't recommend it, we will post rules, after they are fine-tuned at the conference in July.