ON LOCATION

Take a lot or a little. Your phone or pro camera. What ever you have with you, Note the gear and talk about it, talk about the why. talk about how you are using it. If it's your phone talk about he ease of use and accessibility. If its a digital camera, talk about your settings and the type of gear associated with it (i.e. Sony a7c with a Sony 40/2 G lens.) If its fit same thing (Mamya RZ 67 with a 110/f4 lens & Fuji 400h 120 film.) 

This goes hand in hand with your gear. If its your phone, screen record the edit. If its your pro camera, screen record as well, with all of it, film your self editing or developing. this way you can talk to the camera to explain how and why you did something

wether you're filming or self or having someone film you make sure to capture what's going on and you before, after or during explaining or narrorating what's happening. The more you can film regaurding what's happening the more cantext there will be.