Create a new layer beneath the initial girl layer. Well, like this.  



Fill the layer with dark green.  



After this create another layer and fill it with black to transparency gradient.  



Result.  



Warp the result.  



Create another (the 3rd) layer on the top of all and fill it with the same black to transparency gradient.  



 



To create a more painted like look I will use cutout filter on my girl.  



And another layer, this time to paint on it finally. I will use my newly downloaded Texture brushes. The can be found on deviantart.com or any other this like resource.

Begin to paint. Select vary large brush radius. The color is orange. Opacity / flow = 66% / 50%  



 



Set the layer mode to Color Burn.  



Here is the result in details. We will erase that spots from the face further on.  



But no we will add some additional texture to our image. Create another layer and chose dark color, let's say dark green or even black.  



Warp the texture.