That's a huge burden! In the affirmative defense of SELF defense, YOU must prove your innocence by a preponderance of the evidence.... 51%. The reasonable doubt standard no longer applies once you assert this defense. If the prosecution has met the elements of their case you may proceed with your affirmative defense if your intent to do so was in the pleadings. A preponderance of the evidence is a much harder standard to meet than one juror with doubt. You must “tip the scales”. If I’m a juror you are not getting away with this shooting. (Based on the facts as we know them at this moment) If you were a juror perhaps the defendant would go free. Therein lies the problem: You don’t know what you are going to get! Why go through that?
I'm sorry but you are wrong here. The the prosecution must disprove the defendant's assertion that they acted in self defense not by a preponderance of the evidence but by a reasonable doubt which is the higher standard to prove.
To prevail on a claim of self-defense in a homicide prosecution, the defendant must show that she was in a place where she had a right to be, that she acted without fault, and that she had a reasonable fear of death or great bodily harm. Martin, 512 N.E.2d at 851. Once the defendant raises the issue of self-defense, the State bears the burden of disproving the existence of one of the elements of self-defense. Id. One way the State may meet this burden is by presenting evidence sufficient to convince a reasonable juror beyond a reasonable doubt that the defendant, in light of all the circumstances known to her, could not have entertained a bona fide belief she was in danger of death or great bodily harm. Holder v. State 571 N.E. 2d 1250 (Indiana 1991).
Also, as I have said in other posts you are presumed innocent until proven guilty. Thus you do not need to prove your innocence the state must prove your guilt.