I mostly shoot video, so these suggestions are limited to that format…
With the high quality of modern consumer cameras in terms of the video they can shoot, the biggest difference I see between amateur and professional video is how stable the shots are. Maybe talk about strategies for shooting very smooth video, both in terms of equipment and how to hand hold.
Edited videos are usually made up of very short clips (2-4 seconds); shorter than folks generally assume when they are filming. And the ratio of raw footage to what is actually good enough to use in the final edit (i.e., compelling, interesting, high quality, smooth, advances the story, etc) is often 10:1. Keeping these things in mind can be useful and could be explored.
‘Rules’ of composition apply to video too.
Cycling through a variety of types of shots (e.g., zoomed in animals, wide angle scenics, walk-past set shots, macros, POV moving shots, etc) is far more interesting than a video of just one type of scene over and over.
I normally don’t sweat the audio quality since my videos rarely feature dialog, but recording decent audio is a whole other can of worms.
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