Using the selection I started playing with warping, resizing, flipping and came up with different hair shapes.
As I created more shape I blended them into each other using layers masks.
I really wanted details so you can imagine it did take quite a lot layers to reproduce hair texture as good as possible.
I also sharpened some pieces of hair.
In this step you can see how I started with the face.
I got more thinner hair pieces and warped them more curved for some areas which I intented to only slightly reveal later on.
In this particular step you can see how I started with the left side. (Same methods as described in step 5)
Added extra fur on some areas that I wasn't satisfied with and blended them better.
Also selected eyes using the eliptical marquee tool, duplicated layer, changed blending mode to screen, added gaussian blur to get a vibrant look.
Added backround and a gradient adjustment layer to it (from orange to blue). Changed blending mode for the gradient layer to color and lowered opacity for more realistic tones.
I also darkened some areas around the eyes using the burn tool.
Here I added the light coming from the right side using a soft yellow gradient and a free light beams brush. I also added gaussian blur, duplicated layer and changed blending mode to screen usually used to pop up lights.