To draw, move the mouse pointer around and hold left-click. To change color to green, press a on the keyboard. to change color to light blue, press b on the keyboard. To change color to red, press c on the keyboard. To change color to blue, press d on the keyboard. To reset everything, press the green flag again. When if you want to clear the backdrop that says "Drawing Things" wait 3 seconds.
I used the tutorial from @LiFaytheGoblin. Thank you!!!!! :)
