TO START: ~press the flag and wait until the cursor comes to you. Then, press space then G to start drawing. ~NOTE~ This is only for your first line. TO DRAW: ~press G to put the pen down and start drawing. ~press SPACE to lift the pen up and stop. TO CHANGE SIZE AND COLOR: ~Press the number on the keyboard that matches the color on-screen to change color. ~ press E to increase the size and R to reduce the size of your pen.
If the commands aren't working, just keep doing them until they work. If putting the pen down doesn't work then try pressing SPACE the G.