Park harm what is to be done now?

Hello dear people tonight one in my parking car with its 13 meters trailer , driven backwards into my car My car got at first glance good what, back the side wall, fenders , taillight and bumper . It also came the police the accident causer also did not try to talk out immediately everything admitted and also said that it is 100% his fault , however the police meant he must pay them now 30 ,- for the penalty Ok I’ve never had an accident damage in my life, the accident cause gave me his name and address, he himself is German, however, lives in Poland and his trailer is also covered by Polish insurance warta.pl I still have the –> http://www.gruene-karte.de/…/index_gk.php?… found I see the right thing that I have to contact HDI if you have any questions about it. Now I don’t know what to do now. What would you advise me to do?