I think you were trying to reach the secret area of level 2. It's a hard jump to make . However to go to level 3, collect the second essence on the tall platform, and walk back to sunflower. I did not have enough time for level design, so I could have communicated better what the essence do and how many you needed to activate the sunflower to go to the next level.
I do intend to add more to this game and convert it to 2.5D . I'm not sure if it will bring everything together more cohesively, but it should add a little bit of flavor to environment. Thanks for playing!