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Fire
Make a new image, this time we will be using Grayscale mode.
Use
width:300 pixels and height:200 pixels.
Look at picture below:
Fill the image with black, so your image will be all black now.
Look at your channels, you only have 1 channel called "Black".
Now create a new channel, the new channel will be called "Alpha 1".
Use the type tool
to type some letters:
Now click on the "black" channel.
From the channels, go to layers...
>>>>>>>
Then fill the selections with white. You will have some white letters now.
After that go to
Select>Deselect
Rotate the letters now, go to Image>Rotate Canvas>90 CW.
Go to Filter>Stylize>Wind, use the following setings:

Method:
Blast
Direction:
From the right

Rotate back the image, Image>Rotate Canvas>90 CCW
your image should looks like this
Now go to Filter>Stylize>Diffuse, select Normal mode.
Then go to
Filter>Blur>Gaussian Blur, use Radius: 1 pixels, now the words are blur.
To add fire colors, we go to Image>Mode>Indexed Color,
then second  go to
Image>Mode>Color Table.

Select BlackBody
Click OK then you're DONE!