i posted a few panorama's already actually... one of them is my sunset...
a few things to take note of when taking panorama.
1) Set to full manual (MF is optional)
2) Tripod will be useful if you're shooting lower than 1/30th of a second
3) Set your Aperture and Shutter Speed to get the best exposure levels for the panorama - you want to leave it fixed to achieve a similar exposure level throughout the picture.
4) Set your WB (U can leave it on auto if you want to)
5) Focus on your subject
6) Shoot with layers slightly overlapping each other (Do not change your settings)