If you want to get through this level with relative ease, you will want to use the Beam Boxes located near the start. When ready, get on the circular platform and shine light on some ghosts!
Stamp
The Character Switch that triggers the Stamp to appear is found during this first platform ride.
Green Star #1
After the platform ride comes to an end, you are dropped to a lower level. Walk away from the Peepas in front of you until you find a small ledge containing the first Green Star.
This can be a tough platform ride to survive. Parabones fill the area, and even the Red POW Blocks can’t get rid of them if they fall on your platform. If you collect all of the Red Coins after grabbing the Red Ring, you can earn a Super Leaf, which can make this section much easier.
Green Star #2
After the Checkpoint Flag, another platform ride awaits. Watch out for a ledge on the right side of the corridor that the platform shoots through; it has a Mystery Box Box on it. The bonus room it takes you to gives you ten game seconds to wipe out a swarm of six Boos. The Beam Box is a requirement! Afterward, take the door next to the Mystery Box’s location to end up where you need to go.
When you get to a ledge with three doors on the ground level, take the one on the far right. It takes you to a ledge in the same room. Take the door on the right again to proceed to the next section.
This next platform ride is much more dangerous, as the platform has had two large chunks ripped out of it. The corridor is filled with Peepas and eventually Parabones join the fun, too. You can see the last Green Star in the distance.
Green Star #3
Be careful approaching the third Green Star; a Big Boo appear on top of it. If you still have the Beam Box, you can make the ghost disappear and take the star with no fuss.
Topping this Goal Pole takes good aim. You start on a platform high above it, but it quickly collapses. A Tanooki Power-Up or a Cat Power-Up can be very useful here.