Start off by running straight ahead to the ? Block to obtain a Super Bell and receive the Cat Power-Up. Run to the right and collect the coins, defeating the Goombas as you go. Head along the near side where the sand is located to find a hidden coin block and also start a chain of coins. Back up top you can jump into the clear pipe and hold up to claim Green Star #1 . Continue to the right and into the second clear pipe which drops you off at the halfway point. From here you can visit the Sprixie with binoculars to get a look at what’s ahead. Run over to the Rabbit and catch it to obtain Green Star #2.
T hen head into the pipe against the wall. In this room you’ll see the Stamp atop the pipe, just head inside to reach it.
Back outside, climb the large back wall to the top where you’ll find a Rabbit and Mega Rabbit. Catch the Mega Rabbit to release a Mega Mushroom and snag the Green +Clock to add some time. Use the Mega Mushroom and drop off the ledge heading right over the bridge demolishing everything in your path. Your goal is to reach the blocks after the bridge that you’ll break. Drop down the hole to find Green Star #3 then use the Warp Box to go back out.
From here, head to the end of the level where you can start a coin chain. With the Cat Power-Up you dont have to cap the flag, because you will climb up towards the top but only so far.