Mushroom Way
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Get 10 total coins between the two chests in the first room (12 coins if you want a safety heal for Croco)
(video credit: IamTehShark)
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Do flower jump and get the flower in the chest from left platform, then drop down to the Flower Tab behind the ambushing Goomba below.
(video credit: IamTehShark)
Technique: Flower Jump Setup
If you run straight up into the wall and then hold up/right, you'll get stuck on the flower. From there you can just jump up and you'll never hit the Goomba.
Contributed by headstrong
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MARIO'S PAD | MUSHROOM WAY | MUSHROOM KINGDOM