(I absolutely love the fat pony! It always makes me smile when I see it 😄)
One would assume it would be easier in 3d because of the many ways you can rotate objects and cameras independatly to match the fov perfectly, but it is certainly not as simple as I thought heh. Looking in the viewport is one thing and then the render itself is not 100% physically accurate to all geometry down to the .00x's that are needed for it to work. It was a good practice for sure.
Noice. I know it's possible to do this IRL if you can get the viewer to the right vantage point, but I've almost never seen it tried in digital rendering.
(P.S.: Thank you for making the notes actually legible. :p )