The Shrink Fun film will twist and turn as they bake. This is part of the shrinking process. Please be patient and wait long enough for the shapes to flatten themselves back out.
If you take them out of the oven too soon, they will remain curled or folded over. Please place them back into the oven and continue baking at the same temperature. You may then proceed with the next step in the instructions. This will allow the pieces to flatten out and will complete the process.