Super Mario 3D Land: S7-4

We have to deal with flipping platforms and Cosmic Mario. If he runs into you and it doesn't kill you, he becomes a giant. The first Star Coin is on the blue side of the first set of flipping platforms with the spike blocks. The second Star Coin is over a flying item block. The third Star Coin is on a blue platform past the second. At the end, go up the steps to the platforms to the flagpole.