Oh, I just love Shrinkey Dinks! If you just let it shrink up it will eventually lay flat. I know it doesn't look like it will, but it will. After they lay flat in the oven continue baking for another 30 seconds. Then when you take them out of the oven you should take a book and lay it over the top of the shrinkey dinks (this is to flatten them even more).
I made some shrinky dink jewelry. Very cute! I will post some pictures (eventually).