Open up your image in PhotoFiltre.
Go to Image >> Duplicate.
Resize your duplicate so that it’s significantly smaller. I resized mine to 100px for the width.
Now go to Image >> Rotate >> Free >> +10.
Now zoom in on your picture and using the Selection tool on the Polygon setting, select the sides of the picture.
Copy and paste it onto the original picture.
Now go back to the smaller picture and click Undo so that it goes back to normal looking, not rotated.
Rotate it again but this time make it negative 10 (-10) so that it rotates the opposite way.
Copy and paste it onto the original picture on top of the first smaller image.