Yes. Like that. When I got back into flying, I went to the Santa Barbara training hill and had Willy video my launches and landings. He said I let the nose come up in my first two steps then brought it down. I couldn’t sense the nose going up. Had to see it on video to correct it.  Lately, there’s been a number of sloppy launches at Crestline that could have ended badly.  Some pilots are known for mushing off. Seeing themselves on video could help them correct the problem.  Others have inconsistent landings. An instructor may be able to spot something very simple that they’re doing wrong.