Go to Image> Adjustment> Desaturate to desaturate the cityscape image. Next, reduce the layer opacity around 40%.
Create new layer above the cityscape layer, you can rename the layer as you like, mine is "black vintage" (i know that's lame, please deal with it). Now grab the Brush tool, pick the soft brush (the one with Hardness 0%) and lower the brush Opacity to 30%.
With the brush tool, paint the canvas edge with black. More opacity on each corner as shown in the screenshot below.
Now create a new layer above the "black vintage" layer, i call it "white exposure" (feel free to give it another name, i won't mad! :). Still using the brush tool, this time paint the middle areas with white. See image example below.
Open up the dove image we got from here. The fastest and easy way to extract the bird was using the Quick Selection tool. Grab the tool and start creating selection by click and drag around the bird.
Sure that's a quick selection we've done there, but anything that was done quickly, often sacrificing quality. Go to Select> Refine Edge menu to show the Refine Edge dialog. Here, activate the Smart radius checklist and play around with the Adjust Edge settings to smoothen the selection's edge. Click OK to apply.
Copy and paste the bird above the red circle layer. Use the transform command to adjust the bird's size and position as shown in the example below.
You may notice the subtle black colored edges around the bird, we can remove that easily by going to the Layer> Matting> Remove Black Matte. Be gone!
Duplicate the bird by pressing [CTRL] [J], flip it horizontally by going to menu Edit> Transform> Flip Horizontal. Now place it on the left side of the red circle. Make it smaller by using the transform menu.
Get the feather stock photo from here. Open the feather photo and then go to Select> Color Range menu. This way we can select the feather by taking its color sample. Click the brightest white color of the feather with the eyedropper, then maximize the Fuzziness value to 200.
You should get the whole feather shape by now. Click OK to apply Color Range command, there you go! the selection was done.
Insert the feather above the bird layer. Use the transform command to rotate, adjust its size and position as shown in the example below.
To make the feather blend with the background, change the blend mode to Screen.
To get the "depth of field" illusion, we need to use Filter> Blur> Gaussian Blur menu. Adjust the Radius value around 1,5 px then click OK.
Next, we add another feather with the same technique as the previous one. Place it on top left corner, and apply the Gaussian blur filter again, but this time use Radius 1px.
Add the third feather on the right side of the red circle, above the bird. Use radius value 0,5 for the Gaussian blur filter.
Make sure you already got the lens flare pack from here. Go to File> Place and select the lens flare image you like to insert, mine is "optical-7". Hit Enter to apply the image as a smart object. Oh, and don't forget to place it above all layers.