You would have to hire a lawyer to submit an appeal. And this would be a collection of documented proof  that somehow the decision was unfair. this can be costly, especially if you lose. It would help to include signed testimonies of friends and family, co-workers, and proffessional people you know who will stand up and support you on this matter and also comment on you character and past  related behaviour. If you end up losing the appeal you may have to pay for the entire court costs. A Discovery or an informal meeting is held to go over the evivdence and to see if the re-trial is actually worth the time and effort to do again.