Congrats on getting your first game published.You've got a great artstyle going there. From the screenshots it seems like it might be a bit too Angry Birdsy. I'd try it out for you if I already had my iPhone. Nonetheless, my advice to anyone doing one of those games is always: try to do the things Angry Birds doesn't do. Powerups for example. I can imagine adding powerups and putting them in difficult to reach parts of the playing field. Getting that powerup would make the next ball(s) heavier, faster, etc. making it easier to break through to the striped shapes. Would add a whole nother layer to gameplay.
