The thing about… hey, thing, long time no see… these mirror image pictures is deciding where to cut it, copy it, and paste it back together.
And do you move the original half to the right, or the left?
There is also up and down to consider… an once you have a mirror image, do you then mirror that?
And if so, in what direction, and how many times?
You never know how they will turn out, and you can always do more. Art!