I think the first game I ever made was a bat and ball game too, he he, and this is alot better than mine was! These games are easy to make but hard to make great and excite the player but the power ups are cool. Remind me of DX Ball! Or maybe you were inspired by that game!
Maybe improve the presentation a bit, for example, the default font for the score object etc, never looks good. And have different music for each level, that music restarting for every level started to annoy!
But nice first game, I liked it.
Playing this made me want to go and make a bat and ball game! Very good for your first game, i liked the boxes that contain more balls and the fire ball power up was cool. Got difficult in the last levels , you should make part 2, just do some backgrounds! Thumbs up
you have my GOTW vote!