Proving fault of the other is usually the easy part, and you probably have a pretty good idea of whether the accident was the fault of the other, of if it was partially your fault, or if it was just a thing that happened with nobody really at fault. The harder question usually is what injuries resulted, including the physical injuries, the emotional injuries, and the pain and suffering.
Have the injuries completely healed, are they permanent, will you get ever get better, are you stuck with this pain? I will probably spend much more time with you talking about the injuries and the effects of those injuries on your life than I will spend talking about the accident itself.