There are many of here that can help prepare you if you do not have a lawyer. We have helped each other prepare. I know it's stressful. The good thing is many of us were in your situation and have lots of experience to guide you
I agree, this forum has been very helpful to all and myself. I had my appeal which I won couple weeks back without a lawyer. You just have to be strong, gather as much evidence that can help your case and represent it in a good way. If you can afford a lawyer its good, but that does not guarantee that he will win your appeal. Let me know if you have any questions.