JustcallmeRiley, you're not getting off topic with any question about Jasper.
I would agree with Esme echo. It would be understandable if he associated his scars and fighting with his prior life of emotional trauma, but he doesn't show any problem with that, he enjoys fighting. His scars don't hamper him in the least and the only opinion (I think) he would care about in that matter would be Alice. She would probably tell you the scars are a turn-on.
His scars are a signal only to other vampires, humans typically can't see them unless they really look, which doesn't happen often. It's perfect, really. Since virtually all other vampires are red-eyes, the scars represent a powerful warning not to mess with the veggie clan.
I think the only time the scars back-fired was with James' coven, but then he was a danger-freak.
"It will take an amazing amount of control,” she mused. “More even than Carlisle has. He may be just strong enough…the only thing he’s not strong enough to do is stay away from her. That’s a lost cause.”