To be perfectly blunt, this is worse than your first one. It's packed full of bugs, incoherent, and contains no redeeming qualities. Really, my only suggestion to you is to take more time when you design screens, add detail and fun to everything you make, and test for bugs (walk left -- boom, void city. That's not good.). It's okay to post your first levels for constructive criticism, just make sure you recognize various design decisions that aren't exactly the best, such as randomly spewing objects around the screen, or making a blank screen with a floor and some dot thing in it. Those don't count as fun, those don't count as "background" or "ambiance," it's really just useless. Unless this was a joke, I don't see a real reason for why this level was made like this.
I'm sorry if I sound at all harsh.