The start has Waddle Dees and several enemies you can copy off from. Scale the clouds and you’ll enter the star zone where a UFO appears. In UFO form, you can move basically anywhere without needing ground. The aurora zone has many enemies and blocks ahead. One block that doesn’t match the pattern is an invisible door that leads to a room with a green switch. The last area has many green-colored foes that can be copied off from. Defeat them all and go to the goal.