It works. Graphics are good, and the game isn't broken (but Stencyl makes those really easy).
You should make the mouse an option. The blocks are unpredictable, so the ball path can be unpredictable. You even have a custom mouse too. Or at least make the pad faster.
Most of these games have a varying direction path depending on where the ball strikes the pad. This game doesn't, so no bonus points game. Not a bad first project...