In Act 1 you'll come to a windmill where there's a boat keeper tied to a post and a sleeping Wakcha. You need to make your way past the Wakcha to the top of the Windmill while Teku's candle is lit. In the room at the top, light the candle to cause a door to open up. At the end of the platform is a rock -- push it off the platform. The Wakcha will get caught in the rope and rug and will be left hanging from the pulley. Walk to the very edge of the platform so that Teku is leaning over and then jump off it. The flower will break your fall.