The flood was made by a filter from the Flaming Pear which I've had for many years and don't remember where I got it from. The rest was through tweaking shadows, contrast, burn brush. If you want to nicely merge the edges of one image with another, always create a mask and then go over the edges with a soft black brush.
As you can see the edges merge nicely with the background. I merged everything together and did a final shadow/highlights tweak. (5 years and 1823 days ago)