It honestly isn't your best work. It seems too simple. It just looks like you pasted a bright render over a blurred background and added very transparent smudges. And even on your latest version (over this post) the text still doesn't fit.
Duchebaggy Cnc aside. I suggest reducing the blur on the background and only blur the parts that are far away, since it's what spoils the depth of the signature. And reduce the brightness of the render. Since atm I just see a pancake for a face with eyes and a tiny hole for a mouth. A solution for the text is to either put a semi transparent box behind it or add a stroke. And show the smudges a bit more because right now, some people might mistake it for a purple fart ._.
The idea could be awesome if done properly, the problem is; its just not done properly. Because this looks like you just started using photoshop...
I'm sorry but I have to only give you a 6/10 and that wasn't the number I had in mind too.
However. If you want I could help improve it for you.