I'm really glad you enjoyed it! I loved working on the animations! :D
I didn't go into much detail in the description for the spectators, but they work like this:
More spectators appear the bigger score you have. Only the colorful ones throw an extra juggling ball, and those appear randomly, being rarer the more balls you juggle with. They are guaranteed to spawn when having less than 2 balls, so you can start juggling again after dropping all the juggling balls!
Maybe I should add that into the description