I was a little worried as I was putting this together, because one of the layers did not cooperate, and I thought it was going to be lopsided. But it wasn't! I was able to fix it and it turned out beautifully. I didn't really have a template, but I knew that I wanted the bubbles to appear that they were draping over the side of the cake. Also, it was a good call to purchase the plastic bubbles from Amazon. The gel bubbles would not have performed the way the plastic ones did -- and they are A LOT more trouble.
All in all, it was a success! Gracie liked it -- and loved the bubbles! More party pics tomorrow!