paper prototype reflection

It has helped me because I can think what I'm going to draw for my game. When making the game you need to know what your going to draw that's  why you can draw it out so it you make a mistake you can fix it but if you don't draw it out you can mess the game up and probly you wont get a good grade for it.
Thats why people draw it out first and then make the real game so then you get a good grade.