Hold the green screen in front of you. Place your hand in the center of the screen at the top.
Push the screen downwards with your hand. As you reach the bottom, twist it slightly so it forms a figure 8.
Kneel down on one circle of the figure 8 and grasp the other circle in your hands. Pull it toward you.
Place one hand in the middle as you're pulling. This should cause this circle to fold in on itself.
Pull the circle you just folded over the top of the half you're sitting on. Pull on the edges to adjust them so it forms one complete circle. It should now fit back into its package.