New Super Mario Bros. U: Layer-Cake Desert-6 -- Blooming Lakitus

Lakitus are flying overhead in this level and you'll want to take their clouds. Grab the Ice Flower in the item block over the palm tree. The lower part of the level features spinning stones, like the rolling hills in Acorn Plains. The Lakitus don't throw Spinies, but rather Piranha Plants. Grab the Lakitu's cloud and fly high into the sky. The lone brick block in the sky has a 1-up. The first Star Coin is above the spinning stones and some blocks. There are spinning coin rings in the air nearby. Around the time the cloud disappears, you'll be close to the midpoint. There's a Red Coin Ring near some giant Piranhas. Over the spinning stones past the Red Coins is a pipe to the second Star Coin. It's to the right of the POW Block. The third Star Coin is at ground level surrounded by Piranhas. Use a Koopa shell to get it. From there, it's not far to the flag. This opens the path to the castle.