Alot of glitches on an overplayed genre. Seeing as its your first submission though treading the path most followed is not a bad thing to do.
Work on getting the glitches worked out though, fake floors that i dropped through was one (and not the platforms that were meant to change to fall throughable) also a glitch where the ball spawns under the platform and begins an endless cycle of falling. Another glitch where you have multiple balls in the level at the same time. Think it was a hit detection issue as i got really close to one of the enemy balls but it didnt quite connect, but another ball spawned. was interesting as i thought it was suppose to happen as both balls jumped and acted when i attempted to move them, but i beleive it was a glitch as it never happened again.