All right, so you’ve got your picture looking a little older. Now, we’re going to give it some dimension and some abuse. You can do this with any picture. We’ll go from this to this:
First up, we’re going to give the picture scratches. Pick a brush that looks a little rough. Take it down to a size of two or so and make sure your foreground color is white. Create a new layer, and then go nuts. Draw little scratches all over it. It doesn’t matter how you do it, as long as it looks good and at least a little natural to you. Once your layer is relatively full, pull its opacity way down until the scratches are as subtle as you prefer. I wanted mine to be barely noticeable.
Put all of your existing layers into a new folder and call it something like “picture.” Then make your canvas a little larger than it is now – we want a white border around the picture. You can either go to Image > Canvas Size and resize it manually or use the crop tool. To use the crop tool (c), select the whole canvas using the tool. Then, holding down alt, resize the crop area to the size you want and hit enter.