Leap from bubble to bubble and keep the leaf floating. Look out for things that will make this harder or even directly take you down.
You can only control the leaf while inside a bubble, use tap/hold-and-swipe to indirectly steer the current "leaf-bubble". But beware, when you release your finger the bubble will burst.
You are scored with each bubble, if you can beat my high score of 10 you are excellent. Good luck!