I've chosen to believe that your game is made of balloons. But seriously, learning a new engine while making a jam game is great. It can be a pain, like you've found out, but you learn so much in such a short time. I'd attribute most of my gamemaker skills to game jam participation lol. It's good you're keeping stuff organized btw. I just write a todo list for my jam games at the end of the day. Although, when you're working in a group, I guess keeping everything extra organized is important.
Anyway, looks like your game is coming along well!