CheesePeow: I have a suggestion: maybe try making it black and white? With the contrasts and everything, I have a feeling that it would look better. Anyway, I don't like the colours. It's monotonous, and over-contrasted. Also, it's quite busy, as in there's way too many things going on in the banner. However, it does have a nice grunge feeling, which is obviously good. And the text is pretty nice as well. It gives me the feeling of old, flickering lights in a run-down motel room, if you get what I'm talking about xD Besides the colours, it looks good enough as it is. But maybe tone down on some of the effects, or blur some areas out, just so it doesn't look as messy.
Animadversion: I don't know which one's best o___o I'm stuck between version one and two. The cool, blue-ish colours seem to match the render more, but I also like the warmer colours of the first one. So, er, I don't know xD The third version seems to look much too empty without the fog thing from the first two versions. I like the text. You seem to be very good with text placement and font choices. But maybe tone it down just that little bit, or turn it into a clipping mask, since it's ever-so-slightly distracting. The background looks interesting, but I'm not really a fan of the scan lines. The sparkles/stars look alright, but I think it feels a bit... static. I don't know how to describe it >.> Like what Motsuko said, the stars give that snowy feeling for me, and it looks like the snow is just floating in mid air. Er, yeeaaaah :x
evilcheese: Oh, did you make the Sharingan tomoes yourself, or did it come with the stock? It looks pretty cool, and it's nice how the red of the Sharingan draws all the attention to it. However, I don't like the circle brush smudging/clipping masks on the eye, since it looks like there's dust or dirt on the eye xD And are those C4D's to the corners of the eye? Because I can't really tell, and it looks weird. Images like that are pretty hard to work with, though. So kudos for making a good banner with it xD
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Lunar Knights ftw... but there were no good Aaron images :\