In the example of this post, I at least had a barn as a reference, but it was small in the photo and not necessarily plumb, level and square. First attempt wasn’t very good, but I was able to tweak it repeatedly until it got better. To fudge a Match Photo, you can grab the horizon line itself and drag it around (that was the first big improvement in that example). You can also grab the vanishing points and move them around too.