When it comes to sigs, you should NEVER mess with the Selective Color tool for this, or everything really goes down the shit drain. You've messed with the magenta so much it's turned her skin to that colour and looks terrible. It's the first thing I notice as well, which is always a bad sign. If you want to try altering the colour, always use Gradient maps, and those sorts of things. Never use Selective Colour or something else like going wild on the hue and saturation, which is another possible outcome I could perceive.
Apart from that big mishap, you've tried to smudge, and didn't try smudging over the stock, which is hugely disappointing. I like the blue/green colours you've used for the background though, so nice work on that. ^^