Hey There. This is My 1st Tut. I will show you how to make a Basic Grunge Sig.
This what we will be making!
http://i4.photobucket.com/albums/y144/_tal...end_product.jpg Step One Fill Your Background with Black
http://i4.photobucket.com/albums/y144/_tal...tuts/step_1.jpg Step Two Grap some of your favourite Brushes and Brush away. The brushes I use are
Jashin Brushes 9. Ok. Brushing. Since you have got a Black Background start brushing with White. The key i find is to switch between White and Black. Brush till you have got what you want. I find that on the Last layer you usually have extreme black or extreme white. What I find works is make another layer and use the opposite colour (so If you have mostly white use black and if you have mostly black use white) then when you have finished brushing lower the opacity to about 60 - 70 percent.
This is what I have got so far.
http://i4.photobucket.com/albums/y144/_tal...tuts/step_2.jpg Step Three Ok, So you have done your brushing! Now to add some colour.
Layer > New Adjustment Layer > Colour Balance. Now choose the base colour for your sig. Mine's is going to be blue so I will use these settings

I Now Have This

Ok, Now Grab the Gradient Tool
http://i4.photobucket.com/albums/y144/_tal...tuts/steP-5.jpgAnd Set it to these
http://i4.photobucket.com/albums/y144/_tal...tuts/step_6.jpgThen draw a graident line across your Sig. You should have something like This.

Then add another Colour Balance with the SAME settings as the 1st one. The one below is for those who want to use blue!
http://i4.photobucket.com/albums/y144/_tal...tuts/step_3.jpgYou should have something like this!
Step Four Grab Your Render and Place Onto the the The Sig.
Then, Grab your eraser tool and set the opacity to 50% and brush over it. When you are done! well done you have blended your render! I have

.
Step Five Add Text
Step 6 Border.
Make a new layer. Then select all CTRL + A and Edit > Stroke Then These Settings

Then Edit > Stroke and These Settings

Note: Where you choose colour choose a Colour of your Sig. So if the main colour of your sig was Red make it red! :D
Then Edit > Stroke and These Settings

Then set the Border layer to Overlay!

Congrats! You Have Made A Sig!
Please PM or IM me if you have any questions!
Meteora!