Before and After

Step 1
Open up your image in PhotoFiltre.

Step 2
Using the Selection tool on the Polygon setting, make a selection around the person.

Step 3
Now right click and select Stroke and Fill.

Step 4
Now right click on the selection again and select Invert Selection.

Step 5
Save these brushes to use: one, two, three

Step 6
Now press the PhotoMasque button and find those brushes in your Pictures folder.

Step 7
Fill the background with the brushes as much as you want. Use different settings to get the brushes in different areas. You can use other splatter brushes if you want.