I gave up. Hahaha. I just cannot figure out how to solve world-5. I even stuck on world-3 and only advanced to the next level after reading the comment at the bottom. I read the tips about rest/stop at some place, I did that but at the wrong places. I even expect that maybe if I waited long enough at the top platform maybe it moves closer to the door. But I guess I was wrong.
I think you should provide some kind of visual clue to make the spot at the bottom look a little special, maybe put some nice looking grass patch with one tiny flower or something.
Anyways, love the art style. It's cute.