I don't want to criticize your work, so let me just simply say you certainly improved the possessed character. It's still far from anything decent, though. A possessed marine should barely resemble a Chaos Space Marine. I mean, it should look humanoid and it should look like it's body USED to be covered in power armor, and everything else ought to look demonic. Like a person who turned into a werewolf... the clothing is the power armor and the werewolf is the daemon. This guy, and I know it wasn't you, looks like a Chaos Space Marine with mutated armor... Possessed are mutated themselves, they aren't merely wearing daemonic armor.