I agree it's pretty big for my taste but hey...if that's your cup o' tea then by all means stick with it. I'd suggest losing the border and tweaking the text. With a render like that I'm not too sure if that's a good composition for it.
thank for the C&C when i made those sigs i only had photoshop CS i just got CS3 Extended so i think i will have some better material coming soon. Not saying you cant do well on CS cuz im sure people do and i think i did alright with it. But im in the process of another sig im taking time on this one so it should be pretty tight.