Sigs Avatar : Sigs one normal : Sigs two white border: Sigs three border without overlay : Sigs four black nd white border: Sigs five unqiue sigs: C nd C please???
mostly, read tuts like mentioned before secondly, watch those little dots you get from putting multiple render layers above each other. Specifically here, check his face
although you used the same colors it doesn't seem like the render fits into your background I like your sig 5 the most (guess I just like those colors better lol) the text needs a lot of work, and the render needs to be blended.. as said before read some tuts you'll get it down