That one was easy to make. First make a basic noise starfield on Background layer (their are oodles of tutorials). Then on a new layer, do Tom's Fire tutorial with a radial gradient instead of a linear one. Change blend mode to additive. Use Color Balance to add color, and done. I did a little bit more on lone nebula though. I believe I duplicated the layer, ran Sepia, and then did a transparent gradient on it.
Thanks!
Yes there is a tutorial:
http://pdnshowcase.googlepages.com/mysignature
1. For "Vortex" I used Space Age, found on dafont.com
2. For fractals, I used "Visitor", a VERY common font. Just search it, there should be dozens of sites offering downloads.
3. For the "lighter part of signature" thing:
Refer to steps 7 and 8 in my signature tutorial:
http://pdnshowcase.googlepages.com/mysignature
Thanks for all the kind replies.