Instructions
Begin the level and progress through the scene until you reach the second ladder in the level. Climb the ladder, then jump onto the blocks directly to the left. Jump in the air to hit three invisible blocks, one of which activates a vine. Climb the vine to access an area that contains the first star coin.
Continue though the level until you reach the midway flag. Climb onto the rock ledge just past the flag, wait for a windless moment and jump down to the pipe below this ledge. Press "down" to slide down the pipe. Open your power menu and activate your propeller suit. Press the "1" button and dash towards the ledge in front of you. At the same moment you drop from the ledge, shake your Wiimote to activate your propeller suit. Mario performs a sweeping move, collecting the star coin in the process.
Keep your propeller suit on and continue through the level until you see a ladder followed by a steep decline. Time your move perfectly to obtain this coin. Wait for a strong wind and dash down the hill, jumping off when you reach the edge of the ledge. Wait until the wind carries you directly under the coin, then shake your Wiimote to activate the propeller suit. Mario spins upward, collecting the coin and landing safely on the platform above.