I enjoyed this greatly. It was short enough that I didn't get bored, while still being long enough that I didn't feel cheated. Despite the fact that it borrows Sky Flower's mechanism, it uses it to full effect and is different enough from Sky Flower that I didn't consider it to be ripping it off. For example, there are no enemies to be found, and Sky Flower didn't have special no jump/no climb/sticky tiles.
The graphics were quite nice. You achieved the minimalistic look without going overboard, and they fit nicely with the music. The flow of backgrounds worked out quite nicely, and the occasional rain showers only enhanced the effect.
The secret was very well hidden, and although the secret screen was rather bland, the real prize was simply in finding it and having the level creator acknowledge that.
