Oh that wasn't suppose to be disheartening sorry if you took it that way.
Just didn't have the time to give a serious CnC (on my phone).
For the rating I would give it a 7/10.
Compared to your first signature it's much better.
However, when you work with signatures make sure you have some action going on or something to emphasize your focal (main attraction spot).
I guess the easiest way to achieve this is with depth. You can easily give a depth to your signature if your blur the areas around your focal (using the blur tool).
In the sig that you have right now it's equally sharp throughout the entire sig so pay attention to that.
Also you might want to blend your signature a bit better next time so I would use some gradient maps.
Just get 2 colors from your signature (preferably dark on the left side and bright color on the right side) and set it to "soft light" "screen" or whatever you prefer. That should help with blending.
You're getting better and I would recommend looking at this tut next (it helped me a lot when I first started).
http://www.sigtutorials.com/tutorials/basics/basic-grunge.html