Flower 3 (17)

To the left of the ball is another block you can destroy with an egg.

Enter that small alcove and jump to reveal a winged cloud; shoot it to get a Key.

Bounce on the ball to reach the high ledge, and head right.

Flutter in the wind to reach the higher ledge, and unlock the door up there.

In the room you appear in, hop across the donut platforms to the right.

Fly in the wind gust at the far right to reach the top area, then go left.

Jump to collect the coins, including two red coins (4).

Stand on the donut platforms to reach the Character Coin under them.

Once you have it, exit the room.

Back out here, go left and down, then head to the right.

Drop down to the lower area and jump through the Middle Ring.

Use eggs to defeat the Shy Guys on stilts to the left.

Jump to the right ledge and follow the path upward to another Stork Stop.

Switch to Baby Mario, then switch the view so that you control the bottom screen (minimap (the small circular map in the bottom-left corner of your screen) - a small map displayed on the lower screen of the Nintendo DS, showing your current location and surroundings).

Head to the right, jumping to collect all the coins along the way.

There are four red coins to be had (8), as well as the Flower.