Use the Warp medium to stretch and distort regions
            of the image.
         
         To
            warp the image:
         
         
            - Click
               Custom and select Warp from the Custom Media box.
            
- Click
               Canvas.
            
- Set
               the brush size.
               The area that can be warped is determined by
                  the brush size.
                
- Select
               a portion of the image and hold down and drag the cursor to warp
               the selection.
                  
                     
                        
                        
                        
                           |  |  |  
                           | Original image | After using the Warp medium |