Then add Gaussian blur:
Next, change opacity of this layer to 14%.
Add new layer. With huge, soft, gray brush draw dots on the bottom of picture. You can also play with opacity. In the corners it’s bigger than above.
If you want you can change blending mode to Multiply – for darker mood on your work.
Create new layer. In color picker set black and white colors. From top menu choose Filter > Render > Clouds. Then choose Filter > Blur > Gaussian blur. Set it as shown.
Change blending mode of created layer to Soft light and decrease opacity to 44%. It gives your image more dramatic look.
Create new adjustment layer with black and white radial gradient fill.
Then change blending mode and opacity to Soft Light, 50%.
Now you can play with colors. Add Color Balance adjustment layer. In the picture are my settings.