It's very hard to see if a saddle fits by looking at pictures. It's really a hands on type of thing. A couple of basic things to try:
For placement, you want the saddle to slip into place. In other words when you place it, start a little towards the withers and then slide it back until it sits level. Before doing upthe girth, pinch up the pad by the withers.
Next, girth him up, try to put your fingers under the rolls by his shoulder, does it seem tight? If not, then get on and try that again, still okay? Ask the horse to walk while your fingers are in there, is it pinching your fingers? Have someone check that the saddle is not sitting on his spine with you in the saddle from behind.
If the above seems fine, with a clean light coloured pad get him working and sweating a bit. When you take the saddle off the sweat marks should be equal on both sides. Any dry patches are hot marks.
PS: nice looking saddle, your going to love the sheepskin cover.