Good stuff!

The animated part looks out of place but the rest seems solid, nice one.

they look cool, but dont just use brushes, play around with warped texts, ligthning effects, and also try to chance the font, its not good to use the same one on every sig u make

---------- Post added at 01:13 PM ---------- Previous post was at 01:12 PM ----------

look in this web, this has amazing tutorials to make good effects Photoshop Tutorials - Psdtuts+

I really like the ARU one, its looks really good. try different stuff tho, you do obviously have great potential to become even better at making sigs.