Panorama tips:
Set up the camera so that it is stable on a tripod.
Make sure the camera on top of the tripod is level with the horizon, and stays that way as you rotate the camera.
Set exposure to manual (to avoid banding) and try to choose an average part of the scene for your exposure setting. You might try taking a reading 90 degrees off the the direction of the sun. 
Avoid shooting where you have to shoot directly into the sun. 
Ghosting occurs when a person or object falls on the edge of one exposure and out of the frame for the other.
Shooting vertical and wide-angle gives more tilt possibilities to the pano.

Shoot with at least 25% overlap between images.