Can you give more details?
First you need to go to the bouncy thing with hat above the two large snails. There use the double jump to get on the ledge above the bouncy thing. Then go left as far as possible through a room with all the bouncy things that you scanned thus far. After that room is a bear and some bouncy flowers. To the left of the bottom parts of the flowers (one screen below the tops of the flowers) is a secret passage to a blind room (you need to scan for ground). There you must get to the top left via some clouds. There you will transit to room on the left where you will fall. There is a whole new area after that and from there you can through some more rooms fall through to the top right of the map. Haven't played for a while, so I'm notu sure about the last part, but the whole route is quite convoluted and long.