I attached a comment to all of the new code that I added after our class. Yours may look a bit different because you might want to do different things when the "Done" broadcast is received, but you can look at the code I wrote as inspiration! Also make sure to copy down anything you might've missed during our class! Those pieces of code have no comment attached.
Some of the new code is for resetting the sprites every time, which I recommend copying over so that your code acts the same way every time you hit the green flag. The rest is just for hiding everything and changing the backdrop when the last level is completed.
