+1 respect for developing this in Rust.
I enjoyed the art style. The character movement was ok, I found that if I kept holding space when I landed the character did an akward "bounce". I initially thought that was a feature but it wasn't enough of a bounce to get me to the next platform.
The sticky note levels were cool but it would have been nice to see this picture clicking mechanism utilized with more creative level design. You're on to something with that bit!
Good job!