You will find that this level can be a bit annoying, since on the Wii U version, you will be required to use the Gamepad. On the Switch version, you can use the cursor (activated by press L or R) or in the case of playing handheld, you can simply touch the screen. Also, some platforms later on in the level have been replaced, where you have to use the Wii U’s microphone, with them now being normal lifts that move on their own. When you first start the level, use the above knowledge to raise the platforms, allowing you to reach the higher ledge. At the top, in the one corner by the dandelions (the little white balls), there is an invisible enemy called a Coin Coffer. Jump on it to make the enemy cough up coins.
After the first two sets of platforms you can raise, you will see two rows of ?-Blocks. There are more of those platforms underneath, so use those to raise them and reach the ?-Blocks, one of which will contain a power-up. Also, the left one will have some Mini Goombas underneath it, while you can go underneath the right one to access a secret area with the Stamp. Exit and continue to a wall that requires you to make the platforms pop out so you can climb to the top. At the top, go to the left where you’ll find Green Star #1. Off to the right is the Checkpoint Flag and a Warp Box.
In this new area, you’ll need to step onto the moving platforms and blow into the Gamepad Microphone to make them move, but this is only applicable on the Wii U version, as the Switch version’s platforms will move automatically. Ride them to the far end, then jump into the Cloud Cannon, where you’ll be able to race through the clouds and grab Green Star #2 at the end. Back in the level, jump up the ledges, noting that one of the bricks on the left side contains a power-up. There will be more platforms to bring out of the wall with the cursor, but drop down the moving playform to get Green Star #3. From there, it’s just a few more platforms to the end and the Goal Pole.