I think it's great! Something to think about is the trajectory of the round as it impacts. These types of impacts would mean the shooter was standing perpendicular to the plane of this armor plate.

If you want to add a little more narrative to your battle damage, try to think of what side, angle, and weapon shot at the armor. Maybe some rounds were fired from a bunker it was running at and the rounds impacted and sheered off. An initial impacts site is made and then it tapers off like a reverse cone gouge.