Really great job on that, I would just like to post a few suggestions (not meant to be mean) for the end, which you can ultimately ignore and I still won't mind. Like the others, I would firstly say you definetaly should add music. I would also make it so that you clear the lines where it just sort of gets bigger randomly and un-smoothly (if thats a word). Lastly, I would say that where it changes color (I said this before I think), then you might want the whole thing to change color, like the whole background. Otherwise, Really Great Job!!! I really think that this is one of the coolest collabs I've seen in a while.