Well, it looks kind of good. I mean the bar angles mimic the shoulder really well and the back seems to fit. We cannot see if there is any bridging or not, only you can feel that.
Why I sound hesitant is that when you sit in it, your butt is wedged way back against the cantle, and your feet our in front , in a chair seat. And though this may in part be part of the way you have just learned to ride, it means that your seat bones are pressind down NOT in the spot that the saddle is designed for them . You are behind the "sweet spot", the deepest part of teh saddle seat. And I think one reason is that the front of the saddle (the pommel) is a tad too high. This will put a person in a chair seat.
Is it tight around the wither? Not the wither but on each side of it, I mean.