World 6-4 (New Super Mario Bros. 2)

Star Coins

 * Star Coin 1: As soon the level starts, head left to get the first coin.
 * Star Coin 2: Once Mario or Luigi see the first spinning Brick, jump on top to reveal a hidden block with a vine. Climb it to get the second coin.
 * Star Coin 3: The third coin is being circled by Peepas towards the end of the level.