If you are wondering what is the different between spherical and polar panos well I have the answer to that to. First off polars end up looking like a little world that you created and if done right ends up mind blowing. Another way to find out whether or not its a polar is there will be more sky and more objects like mountains will pop up like there is no logic or gravity! Now spherical panos look more like a snow globe than a world and it looks like if you were to follow it from one end to another there would be no end. But this is only possible if the creator of the spherical pano does it correctly and very carefully with great editing and photo skills.
My finished tiny worlds to me look amazing but if I had a little more time I could make them better. One way mine is great is there are no lines where the picture connects from one end to another like a circle. In fact the line actually would blend in more to if I had more time on the two panos spherical and polar. Another way is the ground blends in and my world is not that small but also not medium , hmm... I guess you could say it's smedium. So remember my less better ones are at the top but scroll down a little to see my amazing ones!