The first part of my tutorial is based on an other tutorial:
http://ele-st.org/forums/index.php?showtopic=865
This is the first part from that website.
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Start out by making a new document, at least 300x300, and size bigger than that is ok as well. Fill your background with black, and get out your brush tool. Use a soft round 17 px brush. Now to start the brushing. We'll be making a tree like figure, with multiple branches. Start from the bottom, and work your way up.
you should have something like this:

Note, do brush a bit like the symbol you wanna burn.
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Now, after you've done that, bring up color balance. Ctrl+B
You can use whatever seetings you like, but I used a firey type color.

After that, duplicate the original layer twice, so you have 3 layers.
Now, get out your smudge tool, and start smudging your background layer, with the smudge set on 75%.

Smudge each layer, with a reduced strength each time. You want to make it so there is only a small amount of the tree still intact, and everything else is smudged. After you finish smuding all 3 layers. Set all to lighten.
You can use whatever seetings you like, but I used a firey type color.

After that, duplicate the original layer twice, so you have 3 layers.
Now, get out your smudge tool, and start smudging your background layer, with the smudge set on 75%.

Smudge each layer, with a reduced strength each time. You want to make it so there is only a small amount of the tree still intact, and everything else is smudged. After you finish smuding all 3 layers. Set all to lighten.
1. oke after this you have 3 layers, now merge them all with:
layer-> merge visible (or shift+ctrl+E)
2. Make a new layer and fill it with black. Use this layer as you background so put it all the way down your layer pallet.
3. Make a new layer and name it "Symbol". Press x so you have white as your collor. Now take your shape tool (or press U) Chose your symbol.

As you see i chose a heart.
So first what you do is. Put the symbol in your fire that it fits.

4. My symbol is a symbol where i want to cut things out of, in my case the middle part, this is the same as round. But This isn't nessesary if you dont want to do this, just continue with step 5.
Select your symbol by pressing the want tool (w) and press inside the symbol, now you will have your whole symbol selected.
go to Select->modify->contract. And put it to about 7 pixels.
Now press Delete to delete what you have selected.

5. Take your want tool (w) and select your symbol. Now go to your other layer with the flames, and press delete there. So now you deleted your symbol out of the fire.
Put your symbol layer between the background and the fire layer. You can now hide your symbol layer because you wont need it for a while.
6. Dublicate your fire layer 4 times. Lets call them fire 1, fire 2, fire 3, fire 4. From the buttom up.
7. Select layer "Fire 3" and pres Ctrl->U. Press colorize. And put your setting like this:

Take your wand tool (w) and select the outer part of the flames (the black) and then press delete, and deselect.
(i do that because due the colorizing the black became a bit red.)
8. Select layer "Fire 4" and set its blending mode to lighten.
9. Oke now select the smudge tool again (press R). And all the layers Fire 1 to Fire 4, you have to smudgje your symbol cut out. Note, Do smudge from the outside in with the symbol cut out.

10. Owke now go back to your Symbol layer. (make it visible if you hide it). Press rightclick on that layer and chose "Blending Options".
And add this to the inner glow:

The collor is just black. (#000000)
and add this for collor overlay:

The collor is red. (#FF0000)
Your done!

And maybe after a few tries and a bit of effect you can come up with this:


