Instructions

1

Open Photoshop. Click the File menu and select Open. Browse to the picture to blur and double-click its file name. The picture opens in Photoshop.
2

Click the Blur tool, which looks like a raindrop, in the middle of the Tools pane. If you don't see the raindrop, look for an icon of a pointy finger or a triangle. Right-click either of these and select Blur Tool from the fly-out menu. These icons all share the same tool square.
3

Pull down the Blur menu, the second drop-down from the left on the toolbar at the top of the screen. It is unlabeled but has a small number underneath it. Select a round, fuzzy brush head. Slide the Size bar to 10.
4

Hover the cursor over the picture without clicking. Check whether the cursor size matches up with the edge size---this will vary according to whether the picture is close up, has many details, etc. Adjust the Size slider if necessary.
5

Press and hold down the left mouse button and drag the cursor over the edge in the image. Notice the edge slowly begin to blur. Go over an edge multiple times to cause more blur.
6

Drag the cursor around and over the edges in the image, concentrating on an area to get more blur effect where desired.
7

Click the File menu. Click Save As and re-title the image to preserve the non-blurry version. Click the "Save" button.