I made this for another forum i'm part of, and i thought, might as well post it here?
Lol

To start out, pick your render.
I'm using this one (one i rendered by myself ^_^)
http://i158.photobucket.com/albums/t87/tim...toryGreymon.png
Next, pick the main color on your render.
And make your secondary color black.

These were my colors.
Get your Gradient tool

Select the first gradient in the dropdown menu
(The one that is the two colors you're using)
And select radial gradient

Put the gradient wherever you want your render to be later

Go to Filter>Render>clouds and pick whatever settings you want. And set it to vivid light,
(you can keep trying 'till you get something you like.

Then, paste your render and position it.

And duplicate it about 4 times. but make them all invisible except the first.
For the first render go to filter>blur>radial blur
And give it these settings:

Next make the next render layer visible, and set it to linear Dodge (add)
or whatever you have that's similiar.
And smudge your render a bit.

Make your third render layer visible,
And go to filter>distort>ripple
And set it to 427.
then put that layer on color dodge.

Make your last render layer visible and don't mess with it.

Now, make a new layer, go to your brush panel and look for this brush

If you can't find it, go to your load brushes menu, and select "wet media brushes"
And look for it.
Next, use that brush on the whole signature and set it to 30% opacity.
It should look something like this.

Now, this is the spot where you can add in pentooling and whatnot, but,
I'm not going to in this tutorial.
Scanlines:
don't close your sig, but make another document 3x3 and zoom up to about 800%
Select the pencil tool, and a 1px solid brush from the dropdown menu.
Click pixels like so:

Click Edit>define pattern, and save it.
Now, back to your signature!
Make a new layer, and right click on your clone stamp tool, and select the pattern stamp tool
Stroke that all the way acrossed the signature. Then set that layer to soft light


make a new layer:
Now pick a color that is part of your sig, or one you want to influence your sigs colors
And use the paint bucket tool to fill the layer up, then set that layer to soft light as well.
Then make another layer, and pick black as your color, then do the same thing as before,
Except set it to color dodge.
then unless you want to add a border and text, you're done!
Please post your results!

Here are my results using this style