Not going to happen. As much as i would like him to fry, there is no way to prove this was 1st degree premeditated murder with anything short of a confession or a witness, or some form of unequivocal documentation.
There is more than just the bruises that don't add up. I hope science can throw a few unlikely scenarios out the window and refine some of the details of what more than probably happened that night.
One thing is for certain. He was there. He knew what Natalie was wearing & there is no way she left the door open for him to see her after a violent alcohol & jealousy fueled argument (and no the first of that weekend ie. the night before when she stayed at the hotel with Davern and almost left.)