From the start, turn around and enter the Mystery Box . Here you need to leap from the Mushroom Trampolines up to the Switch Panels, but it’s much easier to just use the GamePad to claim Green Star #1 .
Move up the steps to a bunch of Switch Panels guarded by Fizzlits. Take your time and switch them all to progress. Jump Panels are missing from the next section, but there is a Lucky Bell off to the left in the ? Block . Defeat the Hammer Bro to collect this prize then ascend the tower, defeating all the enemies and ignoring the Green Star Ring for now. With the enemies defeated you now have safe passage to collect all the Green Coins and obtain Green Star #2 .
The next area is full of Switch Panels like before but instead of a Magikoopa you must contend with a lot of Fizzlits and two Hammer Bros. that can jump quite a distance. Focus on taking the enemies out before switching all the panels, unless you are pretty crafty with your leaps that is. Shoot over to the final area and break the crates to find a baseball. Leap up and toss the baseball at Green Star #3 or use a Boomerang to obtain it.
Hit all the Switch Panels in this final area to gain access to the top platform, prime position to cap the Goal Pole.