Agreed that an adjustment to posture will be helpful to changing the appearance as you'd like for your profile. Band pull-aparts and two handled rope cable face pulls will help with keeping shoulder blades in proper position and assist with posture. Videos here:http://youtu.be/kpy2RSXA8dUhttp://youtu.be/uQS-tXL1CLg
As for other factors to improve profile appearance -
1. More lower back work. You sound like you're doing plenty for upper back, but if you neglect the lower back, things will be out of balance. Deadlifts, good mornings, hyperextensions and reverse hyperextensions can all help out with that.
2. More chest size will alter appearances to reduce any distension of the belly area as well. Not that it's easy to add a lot of chest size, but every bit more added will balance things out.
3. More triceps size will obviously change the balance of the arm in relation to the torso as well.
I'd start with posture work first and put some time into the two exercises shown above (you can do them every often at the end of your workouts, or, just try to get them done at least 2x weekly). Nothing that can't be fixed with work, you've got a good, lean base, so it's just going to take some time!