STEP 4:
Now open the photo from which you want the sun of. Duplicate the background layer by pressing ctrl+J/cmd+J. Change the blend mode to lighter color.
Now I want my sun to be more bright and the surrounding to be more dark so once again I am going to duplicate the layer by pressing ctrl+J/cmd+J but this time I am going to change the blending mode to multiply.
Now I think that it is perfect for dynamic lighting.