Photoshop Workshop 4 - Vignetting

First you need to select the paintbrush tool from the tool bar on the left hand side of your screen as shown below:

You then need to select, from the same tool bar, a colour. Black and white is best for this.

Now you need to make a new layer as previously done in other workshops.

Do so by selecting Layer --> New --> Layer

Now hold the shift key whilst dragging your 'paintbrush' across the edges of the image as shown below:

Once happy with the border you now need to blur it.

Do so by selecting Filter --> Blur --> Gaussian Blur

Simply slide the radius slider across until your pleased with the result and click O.K

You're Done :)