A gifted thumbnail for an awesome project. Take it or leave it. I'd be honored if you use it. I've removed the original project sprite and added a thumb sprite. What I usually do is create a costume that covers the entire screen, then when the project starts the sprite is centered, brought to the front, hidden with the ghost effect, then shown. This way, when the project is stopped, the sprite costume appears.
Original instructions: I guess every platform needs its "Bad Apple!!" version, the "Hello World" of the demoscene. So, here is one for Scratch. Enjoy!