Time your jumps just right to land cleanly on its head and bounce off. Each time you do so, your shell meter in the bottom left-hand corner of the screen will fill up a little.
Landing in water will cancel your flying wings and you'll sink to the bottom.
Use delicate finger taps to keep Sheldon swimming underwater in order to collect any coins that are nearby.
Be careful of the enemies that lurk underground and keep an eye on the path ahead. You can see them as a small pile of twitching dirt - they cause by far the most of our Game Overs!
Get the rockets or the wings they allow you to get much further in the game, much more quickly, and the wings in particular are useful for getting even the hardest-to-reach coins.
If you want to gain the significant currency that's needed to upgrade your abilities and power-ups. Completing four such challenges will allow Sheldon to level up, and you'll receive a lot of money or power-ups for doing so.
One quick way of getting some extra cash is to sign into the game using your Facebook account. You'll receive a one-off sum of 5,000 coins just for logging in once.