Enjoyment: I felt a bit lost. First I was caught by curiosity to explore, but when I could only find the one interactable, it felt a bit frustating. I guess this is probably because time did not allow more interactions. And second thing what left me a bit puzzled, is there an end? an correct end? as I got stuck at the sky area, I'm not quite sure.
Gameplay: Even though theres not a lot of gameplay, which not neccessarily must be a bad thing, I missed some form of communication of what may goal was - was the sky world the correct destination? I don't know. Oh and I couldn't figure the sky world out.
Innovation: I think this is my first top-down "platformer" - although I don't know if I would call it platformer. So the idea sounds pretty unique and interesting to me.
Theme: The sky world is a strange place indeed, so the setting does implement the theme.
Visuals: Overall I quite like the pixel art and certain parts already show to be promising, e.g. I love the trees. I don't know if you knowling set unmatching proportions (e.g. little knight vs gigantic flower) to tend towards the theme or if it was accidentally.
Audio: Sadly no audio :(.
Overall nice entry for a first game - the things which work are promising! Keep up the good work.