To conduct an appeal effectively, a criminal appeal lawyer needs to know not only the law that applied at trial, but the specialized laws and procedures that apply only to the appeals process.
Appeals are not for beginners. Unlike a trial, criminal appeals are about finding legal errors. Without a legal error, even if the appeal court has doubts about your guilt, it will not overturn your conviction. Being innocent isn’t enough. Added to that, an accused who has been convicted is no longer presumed innocent. The person who brings the appeal bears the burden to prove that the conviction or sentence was flawed.
The best criminal appeal lawyers can find errors that others will miss, and are masters at framing the facts and the law so that the appeal court will understand that the error at trial made a difference in your case.