Pretty solid entry from my perspective.
My favourite part of the design was the tree mechanic. I liked how you tutorialised it without danger frustration. The puzzles with trees were interesting.
It took me time to figure out how to sprint. I eventually did, but I would have appreciated in game messages telling me how to play.
I really liked the art on the character, though I noticed several problems with the animations. Sprinting, for instance, can be done in place. Sprinting faces the direction you're aiming, not the direction you're running towards, which seems off. With this said, I enjoyed the character's visual design. Her attire and haircut were appealing and elegant.
I didn't like the Background art very much, as it was low contrast with the foreground. So a few times I was confused as to what would collide with and what I wouldn't.
The physics puzzles were much less well done than the tree ones. Especially the final downward mushroom. I basically lucked out finishing the game.
I don't think you've hit the theme at all. At least I didn't notice if you did.