Once you press the green flag, also press space key. Press right arrow to go back to center, press left arrow to make a twelve pointed star, press up arrow to create a circle, press down to make a nonagon, and press a to clear. You can also press down and left arrows to make a cross between a sunflower and a pinwheel, press left and up arrows to make a twenty- four pointed star, press up and right arrows to get a thumbprint design in the center, and press down and up arrows to draw a bumpy circle (if you press these keys for long enough, the design will become a thick ring). Pressing down and right or left and right, you will get very awkward patterns. Next, press h, then press up and left arrows for a long time, until you end up wit a beautiful razor design!
My brother gave me the idea to make something with pen, but I figured out the code by myself.