Google just discovered a powerful emergent capability in Veo 3 - visually annotate your instructions on the start frame, and Veo just does it for you! Instead of iterating endlessly on the perfect prompt, defining complex spatial relationships in words, you can just draw it out like you would for a human artist. This capability is begging for a proper UX, but for now just doodle away in your app of choice, and use "frames to video" in Google Flow.