Great art, I think the concept was clear and easy to learn, and there is some level of strategy. I think the fact that you can only shoot one rubber band helps to ensure the player actually thinks and that it doesn't dissolve into a button mash.
The one thing I felt I lacked was autonomy—that is, I felt I couldn't control the character that much. I'm not sure how that could be resolved but it's just a feeling I get from playing the game.
Otherwise, very cute, and the animation is good!