it has a very big bearing a jury assumes when shown a photograph that its an acruate reflection of the original crime scene if it isnt they have been misled.
Such has no bearing on making a verdict unsafe unless the alleged error undermines the forensic evidence presented.
It has no bearing on the evidence at all that establishes his guilt.
She was shot seated then moved flat. You need to establish that she was found seate dby police very shortly after she was shot and then moved flat by them so that the pool of blood formed after that and that the bible thus was played with by them while wet.
That is the only thing that could undermine the claim that the killer moved her body and the bible.
In the meantime that still would not overcome the suppressor evidence, that would also need to be undermined.
If all of this were undermined then the prosecution would no longer have evidence that proves she could not have killed herself.
Then the prosecution would have to rely on the lack of evidence that she fired a gun at all and lack of physical evidence she killed anyone. This still is evidence but not nearly as powerful as the evidence that says she can't possibly have killed herself- this is definitive so stronger. Definitive evidence definitely constitututes beyond a reaosnable doubt.
Evidence that is not definitive can still constitute beyond a reasonable doubt but might not and jurors making that decision might not agree even if the prosecution thinks it is strong enough.