Create depth of field

Step 1 - Open the photo
If it isn't already open, open the photo you wish to work on.
Step 2 - Choose the Freehand Selection tool
From the Tools toolbar, choose the Freehand Selection tool.
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Step 3 - Set Tool Options
In the Tool Options palette, set the Selection type to Freehand, set Feather to 15, and mark the Anti-alias checkbox.
Step 4 - Select the focus area
Create the selection by dragging around target area; release the mouse button to complete the selection.
Step 5 - Sharpen the selection
Choose Adjust > Sharpness > Unsharp Mask, and set the Radius to 2.
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Step 6 - Invert the selection
Choose Selections > Invert to isolate the rest of the image from the selection.
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Step 7 - Blur the selection
Choose Adjust > Blur > Gaussian Blur and set the Radius to 3.
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Step 8 - Remove the selection marquee
Choose Selections > Select None to remove the marquee and reveal the results.
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Notes and Tips:
The depth of field effect described here is an interesting way to touch up a photo.

Learn More:
Create soft focus - Method 1
Create soft focus - Method 2
Modify a photo via blend modes