Studying for my Drone Pilot license. Every guide written or video trying to explain Air Traffic Patterns fails to outline the most key point. This has caused me a fair bit of struggle. Here's the missing information:
Communication is RELATIVE TO THE PILOT's POSITION not yourself.
This is absolutely key to understanding downwind or upwind. Without being able to put yourself in the pilots seat you'll never understand which way wind is traveling and thus position of the aircraft.