Just a couple of things for future reference:
1. The colour scheme is a bit out of control. Apart from shades of black and white you should only use two other colours to control the visuals. Gradient maps are a life saver for me.
2. I know this is your first attempt, but I've never been fond of sigs where the background demands more focus and attention than your render (RVD in this case). Try reading some full sig tutorials to get a grasp on how to make the render flow with the background in a more professional manner.
What I do like is the border and text in the top corner. Subtle yet noticeable, I like that.