Hey man, I'm a first time jammer and Godot user too! I wanted to tell you that your game has a really cool idea overall and the realization was actually pretty good indeed, I liked it! I wished it was longer cause the mechanic was cool too. Here some advise: if the game is put in full-size window you can see the part of the game that should have remained hidden, you can easily solve this by going to Project settings --> Display --> Window --> stretch --> and select the mode to "viewport". This way the game will always remain the right size! Also in Display you can choose the exact size that you prefer :)
I watched brackey's tutorial too and it was very nice to see someone else use the same notions to partecipate this jam, I hope you can continue to make games because you have neat ideas :3