A+ for idea and originality. The execution was polished and the visuals were very nice, although the platforming could be a little unforgiving at times. Having the ability to jump on clouds was cool once you figured that out. I also thought the panning of the level at the start was a nice touch, it helped you plan out your route before you started the level, which is a nice accessibility feature.
Obviously due to time constraints, it's quite short, but I think there's a lot of promise here. Great stuff!