This tutorial is made for photoshop cs3, in older versions you can’t create animations in photoshop and you will need to export your signature to imageready to create the animation. The steps in both photoshop and imageready remain the same, so you should be able to follow the tutorial even when you use imageready
To get stared we first need to create a signature which we can animate, not all signatures need animations so its a good idea to first decide what kind of signature you want.
My idea is to animate a gun so it looks like it is shooting.