Vignette Effect.

A blank layer is needed to be on top of the image so as the vignette has it's own layer. 

You now have 2 layers and this box says that the blank layer is above the background layer which is what we're looking for. 

Choosing the type of brush is important as it needs to be soft edged to give the right effect. 

This is the image before anything has been applied to the image. 

By pressing the 'control' button  and holding down while you pain, it allows you to paint a straight line down all of the images sides.

To make it so as the lines are less obvious and are faded, you have to apply a Gaussian Blur to the layer that the bordering is on.

This is how you choose how blurred the black lines are. The higher the number is, the blurrier the lines will be. 

This is the image with a 90.0 pixel blur, however the lines are still very bold.

This is the image with a 250.0 Pixel blur so the lines are very faded but attention is still drawn to the center of the image.