Animated fire tutorial Part I: starting from scratch
Time: several minutes
: Let's start this tutorial by making image with the black background, size doesn't matter.
: Now create another layer with the rectangular marquee tool and colour it white, usually it should be 1/5 of the whole image height.
: Apply this filter: go to Filter > Blur > Guassian Blur and enter around 10 - 15 px.
: Duplicate the layers. 4 or 5 times is suggested for a clean animation.
: Select the Smudge tool in your toolbox. In case you don't know how it looks, check the image.
: Use the smudge tool to smudge the white blur layer. You do this by clicking and draging from the bottom up.
: Repeat the above thing through the whole image.
: Repeat step 6-7 on all the layers. Then just simple create each frame for the each layer you have aka basic animation
. At the end, just throw some colour and you should get something like this:
Part II: Using the above tutorial on signatures with a non animated fire