Step 5: In the preview area of the Filter Gallery adjust the location and shape of the oval that surrounds the area of the photograph that you want to emphasize and keep.
As you're making adjustments here, you can also change the setting of the Blur option by moving the slider. Higher values of this setting will result in a more gradual blending of the edges into the background while smaller values will "tighten up" the effect. When you've finished making all of the adjustments, click on the OK button to return to the main PhotoPlus interface with your changes in place.
Even though this is a fairly simple filter to apply, you can get all sorts of results by using different background colors, blur settings, and oval placement on the photo. Below are just a few examples obtained using the same photograph.