I was gonna post a pic of mine, but The Rider set the bar to high. LOL. Beautiful Pic!
Like everyone else said. Add them at the same time, try to get different sizes, supply plenty of hiding places and space, and it can work out. I try not to let them lock jaws. A little displaying is unavoidable. One of mine has a scar between his mouth and eyes from locking jaws. I've also had them kill each other.
It's also cool to keep a little macro algae in the tank so you can watch them build their nest and spit the little babies out.