first of all congrats for the court appointment and for having started studying in Germany.
You seem to be well ingrated in Germany so your chances good to make a good first impression. Make sure you have discussed with your lawyer all the questions and your answers.
Once there say everything needed and be clear, do not fear anything. If they reject your case you appeal again (Berufung) if this does not work you can do the so called "Folgeantrag".
I hope we coud help you, best of luck!