It may be right but it looks wrong to me and I'm finding it hard to rise at the trot. :)
(Note the horse is going up a small hill in the photo)
Saddles looks like it doesn't sit level on the horse's back, looks like it's too far forward on the horse's shoulders. This affects your balance over the horse's back and how the pressure sits on the horses back.
Made me think how many people, not to offend anyone, would stop complaining that their saddle stirrup attachment points are too far forward in the saddle, for them to be able to keep their leg under themselves, so they keep riding with their legs forward. When instead they should just learn to fit a saddle to a horse better, so that they move it off the shoulders, so that it's level and then they would have less issues keeping their leg under themselves.
It just made so much more sense now when
@DanteDressageNerd gave her opinion on the leg/posture issues that the OP has. There are always SO many reasons why not to sit straight, in balance.
Sorry, my brain just had a lot of fun, putting together another piece of the puzzle.
why don't you post a saddle fit thread? put your horse on level ground, squared up nicely and take photos of the saddle on his back, NO pad, and positioned where you normally do, . . . then do same angle with your normal padding set up and position. and then , a shot of the horse's naked back.
ill fitting saddles are generally the culprit of 'chair seat' which is when you can't get your legs under you.
you need the saddle to fit the horse, but you also need it to fit/suit yourself. there's only so much you can fight against.
I recently had 2 saddles that just didn't suit me at all, it similarly put my legs my forward, i've just recently gotten a new saddle the suits us both and the instant difference is amazing. if you can try to have your saddle fitted, or as tiny suggested post a thread so people here can give you a hand for the meantime.
The good: horse ears forward and looks to be happy and comfortable with you on board
The bad: you are far from centered. Way behind the action. Get your back straight, shoulders back, and find the center of balance . Legs need to move back and put your weight in your heels. If you can, ride next to a mirror