Definitely a nice sig, and its great to see something a little different than the "norm"...nice work, great flow, awesome colors!
add saturation and levels, it also lacks a focal, blur some parts in the BG, sharpen a part in the FG to define a focal, then add a lighting filter near thefocal(wherever it may be)
Veryyy nice. I like it! The center looks more fuzzy than the rest of the render though.. Or maybe im becoming a bit blind =P.
looks awesome, as someone else said the sharpness should be limited to the focal point so blur the rest out a little bit, add some lighting
Lighting doesn't matter in an abstract sig in my opinion. It obviously isn't supposed to represent anything real.