This is a speed run level and you’re likely going to die a few times. To alleviate the loss of lives, grab the hidden Coin Box Hat from the back right corner at the start of the level. Start dashing down the right side and long jump the gap in lieu of running along the Donut Blocks.
Stay on the right side so you make the leap to Green Star #1 just be sure to avoid the spiked rollers with precise jumps. Leap across to the center platform after grabbing the star then launch from the Clear Pipe Cannon. The Green Star Ring is just ahead, so hit it and loop around to get Green Star #2 then in a twist leap into the center of this area to find a pipe that leads to a hidden room!
Grab the Super Star and clear out the Goombas to regain some lives then return to the course. Dash along the left side and make the long jumps across the gaps, you need to do this in order to reach the Stamp . Immediately after getting the Stamp take a hard right then continue straight for Green Star #3 and the center pipe which drops you off at the highest point so you can cap the Goal Pole.
Once you clear this level head to the Sprixie House for a Stamp .