I was very confused how to play at first- there was no indication that you had to mouse over the cannon to shoot until I did it by accident. Needed sound effects! The sprites were really nice and I liked the little star animations! No idea what the numbers meant or what the strategy was supposed to be. No way to restart if you lose. Also not totally sure how this fit the theme.
Could for sure add some polish, levels, and instructions to this and make it some kind of angry birds clone