original photo 
edited version
original photo 
edited version
- I it in Photoshop to as an original size
- I copied the image by selecting Image> All
- I then went to Image> Canvas size and doubled the width of the canvas and put the photo to the side with the line of symmetry in the middle.
- Then i pasted the same image next to it.
- I flipped the copy image and aligned it next to the original, then flattened it to create a new image once it was aligned how i wanted it.
- I selected Image> All and clicked copy again with the new image.
- Repeated step 3, but now doubling the canvas length, moving the photo the the line of symmetry was in the middle of the canvas.
- Repeated step 4 and 5.