Well, the videos are really hard to watch with the sun blurring things out and such, but I am sure you did the best you could.
I see a balanced rider. Solid leg, nice upright body (sometimes looks a bit TOO far to inside) and sometimes elbows roll outward, but mostly rides real well.
Horse , improved? I guess he seemed a bit more forward and balanced. He is still bending to the outside frequently, but I don'tknow the history of this horse and it may be that you are bringing him along slowly. But he does need a bit more guidance to begin bending a bit to the inside.
Not much help here, sorry.