Press the down arrow key on the screen. You will now see two color pickers, one for colors, the other for monologue, a slider that adjusts the size of the pen, the Erase All button, and the eraser button. To use the spectrum, first pick a brightness (that is your Y position on the picker) then choose a color (that is your X position on the spectrum). To use the Pen Size slider, the further you slide it, the larger the size. To use the Erase All button, simply click on it. It will erase everything on the canvas, and then give you a new one. Click on the Eraser button to get an eraser. This works because it changes the pen color to white, and since tha canvas is also white…. Anyways, Have Fun!!