You're trying to make your sigs glow too much; it's making them blurry. Instead of making the whole thing glow, just do it to certain regions you want to emboss. Colors are nice, but I think you should make your renders bigger. They kind of drown in the background. Work on blending, too. I like the text a lot, but try to blend it an itty bit more. Add some neg. space in the top right corner. If you reduce the glow, add a light source.
(Hits you withnewspaper) JPEG images are for large images, never save a sig as one. Save it as png...start...now...right now...
