My only area of the mount to critique would be the eyes look a little over done like previously mentioned. They are positioned right, which a lot of people mess up , so they did good there. The top eye lids just look like they are over worked, almost like its got make up on to draw attention.
Most mounts you can find something, and some are terrible that people think are great. If that's less than a $550 mount id say you got your $ worth as far as quality.
Very handsome buck too, congrats!