Okay, it shows the instructions on the screen, but I'll go over them in greater detail here. You can press the space key to change colours, press the 1 key to clear the screen of paint, press the 2 key to get rid of the instructions on the screen (press the green flag to get them back), hold down the down key to paint (NOTE: don't move the mouse too fast when you're painting, or else it just makes many little dots). The colours that you can use are white, red, purple, blue, pink, orange, yellow, green and black. Rate, comment, and above all, HAVE FUN!!! :) ~Limegreenlemongirl