SkyWay Level Design

So the last few days has taught me that I am completely terrible at level design. Thankfully my project's marking won't exactly rely heavily on good level design. In saying that, I've been doing my best to get some good looking skyboxes and textures for each zone. So far there are three zones (each with varying gravity, textures and skybox), and I've made three levels for each zone. My aim is for at least six zones of three levels each. Here's a few screenshots of the zones so far, each showing a different in game camera angle as well:






I have also now added moving barriers to some of the later levels, which, obviously, the player must avoid.