I opened a photo I had taken down the beach.
I started to clone in some more of the blurred green as it seemed to be an interesting part of the photo.
I then took another part of a different photo that was in focus. I duplicated the layer and started to do different blurs.
I then started to clone, erase, blur and smudge in the bottom part getting the colours to blend.
I got some more from a different photo and worked that into the background between the blurring of the focus layers.
I used the brush and tried different affects until the background sunk further.
I then merged the layers and tried different colours. I picked the yellows to come out more.
I also added reds and purples on different layers blending it in. I also added a bright blue to make the dome stand out and to make it look like something out of this world; perhaps building of some kind.
I then tried different star trek shuttles in different positions changing their colours to fit in with the background.