Tiny planet technique

This is my first attempt at photography/postprocessing technique known as tiny planet (aka small planet).

It is not ideal but illustrates the concept nicely. Tiny planet is about turning a photo into a small planet. All you need is some wide panorama photo. It is highly recommended to use 180 or even 360 degrees panorama to get best results. I had no photo like that in my archives and no opportunity to take it so I went with a photo shot using 10mm focal length. Not ideal but after some tweaks I was able to use it.

When you have a photo like that you have to follow 3 simple steps:

1. Change image dimensions so they are equal. Proportions will be lost as height will be stretched but don't worry about that :)
2. Flip the image in y axis.
3. Apply polar coordinates.

Easy, isn't it?