Accident tonight...what to look for?

[CG07SUT]

On the way home from work tonight, sitting in traffic and was hit from behind. It appears the powdercoat on the rear bumper was chipped, my relocated license plate bracket was destroyed and it looks like the plastic bumper corner is closer to the body on the passenger side than on the drivers side. Nothing else apparent, but we'll see. The guys s10 blazer is ready for the scrap heap...not much left of its front end. What should I look out for, or point the shop in the right direction of? Have not had much luck in the past with body shops, so want to be as informed as possible when having to deal with them.

Thanks,
Chris