Use C4Ds it gives a good effect. Also you could have used an extra layer to brighten up the 2 on the right as zjuggernaut said. I also think that the text is placed wrong and could have been better put on the right but then higher. (And a bit bigger)
But overall pretty good for your first PS sig
And yeah forgot to say.. Those borders you used mostly are used for sigs which are a bit brighter and more shiny. For more dark sigs you use mostly solid colors and not overlay.