I have to agree with mace, also I think havings Times New Roman or somethig so similar or text only works if it isn't so separate from the background, in this it feels a little off. But I love 'tallica and this is a great sig overall so I can't complain
The stock looks a bit pixelated/over-shapened or low quality, which is somewhat distracting. Otherwise, I agree with what mace and Death Yoyo have already said. The lighting is actually pretty good, but it might be just a bit too extreme... Try lightening the right edge, I think that that would be good.