Need to see a lot more pictures of the western saddle to determine if it fits correctly. Can't tell much from the single picture you posted last.
In your previous pictures, I would guess that your western saddle is too far forward. Even look at your cinch. It's behind the saddle. Your horse has a steeper shoulder. You don't want your saddle to interfere with that shoulder movement. I want you to walk your horse around, and put your hand on their shoulder blade. Feel how that shoulder moves as your horse walks. Then place your saddle (without a pad first) on your horse's back, and walk your horse around again, feeling for that shoulder movement. If your saddle is "blocking" that movement, you have it too far forward. The shoulder needs to be able to move freely.
The majority of people place their Western saddles too far forward.
∞•*˚ Βгįťţαňγ ˚*•∞
It is not enough to know how to ride; one must know how to fall.