I have photoshop CS6. I want to be able to darken the corners of my photos. How do I do this?

I want to darken the corners of my photos. I know that I can go into filter and render and then do a spot light look, but it changes the color of their skin. How do I just darken the color with out it looking like a big cirlce? Thanks!I have photoshop CS6. I want to be able to darken the corners of my photos. How do I do this?
add a layer mask, then apply the graduate circle from white to dark grayI have photoshop CS6. I want to be able to darken the corners of my photos. How do I do this?
Are you a time traveler? hehehe. I think you mean CS3.











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There's no Photoshop CS6!!!!!!!