Make sure the ends of your panorama match up, or come close!

1. Run your panorama via FILE-->Automate-->Photomerge on automatic.

2. Merge your layers.

3. Click Image-->Image Size

4. UN-check "constrain proportions" at the bottom of the box.

5. Make the WIDTH (top box) match the HEIGHT (bottom box)

6. Click OK.

7. Click Image--> Image Rotation--> 180 to flip upside down

(I promise this is going somewhere)

8. Click Filter-->Distort-->Polar coordinates (make sure rectangular to polar is checked)

 All done!! Now, do Image-->Adjustments-->Levels and adjust your levels. 

Do one INTERESTING landscape shot, and one interesting PEOPLE shot ;)