Its rocket science to me. I wouldn't even know where/how to start.
Zobra, you figured out how to fit into belly dancing scene and make a website dedicated to it, lol i think you can do anything!
So by "start" do you mean like how to file a case?
After such incident you would have all the information you needed about the other person, with that you go to your local court, and it would be you vs the other individual. This is no longer a matter of insurance, that is in the past, they have paid what they are responsible for if their client was at fault, now you would argue for the remainder of what you think is owed to you.
I don't remember specific terminology, it has been some years since i have dragged my previous landlord into a court, but 1st step is to file it with a court. After that case needs to be served to the other party, if they don't know that you are suing them, it will not go anywhere.
Depending on your county rules, judge will likely ask that you two work it out before he has to make it his problem. If not, court will assign your case a date, that is when you two will present and argue for what you believe is right.
If other person was declared at fault, and insurance agreed to pay, you already have most of the work cut out for you. In the case of why insurance refused to pay for "Shelby's actual shit stain on the driver's seat", you will have everything in writing, from that point on is on you to convince the judge that "Shelbys shit stain" worth a gold brick.
In such scenario, likely judge is already on your side, and such cases typically only have to meet the criteria of "reasonable enough". in other words 51% in your favor and 49% in their.
One thing to remember: complete logical statements and facts over feelings. If you come there with nothing but "I think" or "i feel like", don't expect much.
In my case it took me 10 minutes to go over all the facts, another 10 to paint the picture for judge to fully see it, and another 5 for judge to review it.
After about 3 minutes of listening to the landlords "ummm.... ehhhh... i think and i feel like", case was ruled in my favor.