Docs got me on some meds, so I made these to pass some time. They all are not that much different, but you should be able to spot the difs.

You draw the original image?

nope, its a render

Just wondering. Didn't matter either way I liked the 3rd and 4th one.

First and fourth were the best IMO. The one you're using as your signature right now is ugly haha

pretty good, I don't particularly like the last one... but keep it up!

I like them all but that last one is pure sex.

Quote from kinto

Just wondering. Didn't matter either way I liked the 3rd and 4th one.

Thanks :D

Quote from STUFF

First and fourth were the best IMO. The one you're using as your signature right now is ugly haha

Thanks, oh wait, My siggy says your ugly >=o

Quote from extremekd

pretty good, I don't particularly like the last one... but keep it up!

Will doo

Quote from Wtf

I like them all but that last one is pure sex.

Haha, its just #1 with find edges, and a blurred layer of it, and set to lighten

First one is the best. All good though.

All of them are way oversaturated, so nothing stands out even if it's really bright.
Try moving your render away from dead center of the signature, spice things up a bit