TURBO MODE is better. You can choose how many stars at the top left. If you want to see through to the back, make sure the "see through" button in the bottom left is checked. Choose a shape with the button on the bottom right.
I made this with the pen blocks, making my own blocks to make the screen drawing quicker and using the maths functions called "sin" and "cos". These are for circular things and angles so they are needed to make the rotation of the stars. I also use two lists, one to keep the height of each star (starsy) and another to keep the angle of rotation for each star (starst). There is a variable for see-through and one for ball shape.