As you can see from the two images above, that i have created an underwater scene with a shark and a smashed plane in the background. To create this effect first we edited the image on the left with hue saturation to get the underwater scene after that we went into filter and selected noise so that it looks like how the sea flows. Next we got the gradient tool and set it to foreground to background with the colours dark blue and light blue, made a new layer and put that on top until the pebbles at the bottom so it looks like the sea bed. After that we made the two shines of light the way we done this was by going into the polygonal laso tool and made the two shapes then selected colour and picked white and set the opacity to 40%.
Next up we needed to add the shark and the crashed plane to do this we made two new layers with mask on top. We then proceeded and pasted the crashed plane into the image and then edited it with the opacity tool again so that it looks like its behind everything and fits in with the whole underwater scene. Finally we needed to add the shark to get the image looking as good as it can, the way we done this was by pasting the shark into the image again selecting edit and hue/saturation, got the colours as close as we could from the shark to look like it blends in with the background after that our final image is completed.