(adsbygoogle = window.adsbygoogle || []).push({}); You can make moving signatures or avatars (.gif files) very easily in Adobe Flash. I have loads of tutorials on my Youtube channel:

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Anywho. If you are interested in graphics or animation, start by looking at a few tutorials. I might make a tutorial on how to make a moving image one day, if it is heavily requested. IDK. I like GFX.

You can make animation in Photoshop also and there are many tuts for it posted here.