Use the Blur medium to blur portions of the image.
         
         To blur the image:
         
         
            - Click Custom and select Blur from the
               Custom Media box.
               
The Blur option boxes
                  appear.
               
             
            - Click Canvas.
            
 
            - Set the brush size according to the size
               of the area you want to blur.
            
 
            - Select either a Box or Gaussian filter
               from the Filter Type box.
            
 
            - Set the density of the Blur brush from
               the Blur Strength box.
               
You can choose Light,
                  Medium, or Heavy.
               
             
            - Drag the brush on the image.
                  
                     
                        
                        
                        
                           | 
                            | 
                           
                            | 
                        
                        
                           | Original image | 
                           After using the Blur medium |