Peter, I do like your recording, both from aural and visuall impression!
You took much effort to create a video what shows your playing style from different angles. That's why I conclude that you like to get also feedback about the visual impression.
From what I see, your hands and whole body look relaxed to me, what is something what I find very important and necessary to create music what sounds relaxed too, what is also the case here.
To me you sit in a very low sitting position on the piano. Indeed I never have seen someone sitting that low on the piano that the ellbow hangs that extremly down much below the key level, apart from a video about Glenn Gould (who was extreme and maverick in many degrees, not only sitting position). I could imagine that the more normal higher sitting position has the advantage if someone likes to put more expression in the music, to play more dynamically with body support, that's why it is more common for piano players. Also, your hand wrists must be bended more or less all the time, can't imagine that this is of much advantage. Furthermore, your legs are angled towards an acute angle instead right angle. Can't also not imagine that this very comfortable in the long run.
Furthermore, I prefer playing on a piano bench instead armchair because I can move more freely to the right and left side what is required for music what extends the baroque 4 or 5 octave spans, and because it is better for my concentration to not be able to lean.
That's all of course very personal.
That your video shows you from different sides makes it more interesting (because it is especially harmonically wise not the most impressive piano piece I can imagine ...), however it has the drawback that you cutted the piece in small portions from different takes, what is unfortunately also very audible here and there.
During the six months in between, i studied the piano according to a new pianomethod that i designed for myself. I needed some progress because i negelected the instrument for so long. I borrowed concepts from business science to create this method.
Well, I would be interested if you could enlighten us about the new pianomethod you designed for yourself. Has it something to do with an armchair with reduced legs?