My favorite PT and I had a Zoom appointment today, but it didn't work very well. The lighting was poor and it's hard to lay on a mat with your legs in the air and position the phone just so to let her see the angle of your knee. Later, she sent photos of herself doing what I'm to do; that helped a lot, so did everything we discussed. I have a small tripod, guess I'll dig it out and see if that would help. Maybe I need a selfie stick.