I love this pony... I miss little guys like this.
You have the right ideas. Your upper body is pretty decent for someone in a western saddle. Other than the bareback pic, your almost right over your horse's center. The 3rd pic is perfect. At this height, you barely need to be out of the saddle, two point is a great starting place. For someone who doesn't jump or train, you have a great natural idea as to where to place your body.
If your horse says no, you either asked the wrong question or asked the question wrong
And God took a handful of southerly wind, blew His breath over it and created the horse