The signature is pretty cool, well done.

I would only suggest making the background less noisy so that the foreground can be seen better.
The avatar's text is too hard to read. When using a light-coloured outer glow, don't have light-coloured text. And it's a good idea to change the glow's colour from the default puke-yellow, because I can guarantee you there is only a few instances where that colour
works. You would be better off with a black Stroke effect perhaps.