I could post my video of me shooting, but you did specify HELPFUL videos.
Actually, I was able to spot several foot position problems on multiple stations, that in spite of shooting a 24 on the video.
My solution was to watch the video on the problem stations and the foot position used, then go to the range and modify what I saw in the video. It did work, although not the first time, so keep trying.
I generally follow Tod Benders and Paul Giambrone's suggestions on hold points (1/3 of the way from the house to the center state) and look points, which slightly vary per station.; and I've modified to suit my style.
Don't get frustrated, and keep modifying until you find your spot. It's all about having fun.
Hoe could you not love that guy! When i was stationed in Germany we had skeet ranges at the Rod and Gun clubs. I shot quite a bit but the best I ever did was a 24. Shot a field 20ga gun with M?F chokes. Otherwise I'm sure I'd have done 25 regularly.
I recall at one rod and gun club a shooter that shot a pump gun, I don';t remember which; shoot, that was about 1968! Anyway when he shot doubles he'd shoot the first one, jack out the MTY and at the same time reach up with his right hand and catch the MTY coming out and drop it in a pouch on his belt and at the same time be loading the next shell and then get his shooting hand back and break the second! Amazing to watch but I think he was just a show off. Guy never missed!