Start with the green flag... Scratch Cat will follow your mouse around the court. Press space to shoot the ball. Scratch Cat will automatically aim and shoot. And that's basically it lol. Just walk around the court while spamming the space bar.
Tried to apply some basic Algebra 1 concepts for auto aim (I think I'm 50% successful?). Scratch Cat has the best accuracy at the two corners of the court. His accuracy lowers as he moves to the middle. This means he cannot (or can barely) make free throw shots.