So I tried to see if I could make the blp for you but looks like Legal_Ease got to it first. That being said the black part is not properly transparent. Not sure if this is intended but I'm referring to the black area around the golden spikes (Circled Below). In the texture. It causes it to show up on the shoulder armor ingame and makes the spikes look funny.
Edit: By making the blp i meant converting png to blp. I have no idea how to work with textures.