Just click the flag, and watch the stars appear.
Credit to @scmb1* for the original. His was made with pen which is complex, mine is reduced to simpler coding. I agree with @-Nuclear- , the people SHOULD be bigger. My comment on @scmb1* 's project (edited): I would just make one sprite that goes to random positions. When it goes to a random position, have it change to a random costume of a star, set size to random, then stamp. Then place this script in a repeat block, for however many stars you want. But if I were you, I would just use clones. Clones can be altered to where it can change it's brightness effect, just like a real star. Plus if you were to stamp it, it would go in front of the mountain. With clones, you can have it go back several layers. Much easier than having to make it go to specific areas, especially with pen.