Add effects to the left. Get rid of the text. Add something not so slapped on. Or leave it textless. that's a good option too. Otherwise, add more color.
That one looks really good! ;) The only thing I think you should change a bit is the lightning effect on the top, it makes the sig too bright. Oh! And like Darkwatch said, you should get rid of the text. Other than that I think it looks really cool! So much better than I could have made! ;)
Nice one. This is really nice, well done. Yesh, the text does ruin it a bit, seems to...out there. I would suggest taking it away, like Darkwatch said. The lighting seems to be like a white rectangle that's feathered slapped on. If you look at the top left corner, just a bit below the lighting it seems to just suddenly stop. That's what's making the light lose its realistic sense. I don't know how you would do it, but try to make it seem more natural. Otherwise, great job.
Fix the lighting & color, then do the text. I say write God and put it following the curve of his arm. That'd be kinda cool.
I love it. It's dark, smooth, sludgy looking...the way I like it. It's bold, clear and its easy to see. And you picked Light for it! Good choice in character. Keep it up! :]
Eww on the text. I know you could do better with the text. The face of Raito would be a bit better if sharpened. And the light source should be a bit lowered on opacity. It all goes on the "cloudy" look. If that's what you were aiming at, then congrats, you got it. The c4d goes well, but it isn't that important with the size and placement. The colors go well together, the light source seems nice. Overall, a nice all around sig IMO. GJ.