There might be some glitches, but normally you just need to click and drag your mouse to draw. # (0-2) in order for each pic to show and A-J to hide different pics. I needed to make it like this, otherwise it didn't work. Sorry it's a bit confusing :( n=clear all s= show picture (for first pic only) g= gray y= yellow b= black
Thanks to @HappyDolphin Pen drawing project for the idea!! (please check it out)