“There isn’t much to tell,” Olivia said, once she was finished laughing. Sarah only had two legs on “solid” ground, now, and it was running out fast. Beneath her was oblivion. “Just keep your wings out. Cut into the wind as you start falling, take the weight slowly. If you try to catch yourself all at once, you could bend them back too far and sprain. That’s the usual injury. You’re too light to get hurt when you hit the water. And if it makes you feel any better…”