well seeing as you've given me some awesome cnc, ill do my best for you.
For me, I think the purple lightning brush or whatever and the lens flare sort of ruin the depth. I really like what you did with the right side of the sig, but the left seems to be flat.
Maybe you could continue the theme on the left side, but use it to add depth?
I also think it's really cool how those bubbles on the left reflect her face.