I like the render and the back of the sig, but I dislike the white points in front and the points in the top left corner.
And maybe add some text like you name or something?
1.)No Depth
2.)Very monotone
3.)It's very short(Width wise)
4.)I love the effect in the top right
5.)Lists are fun =D.
Overall it's a nice sig but you could improve a lot more.
Its nice, the only real issues are depth but you already know that and it also seems a but dull. maybe its just my laptop but it may benefit from a bit of brightness.