In this (quite lengthy) tutorial, I’ll give you a chance to get a “raw” look over my shoulder and see some of the stitching tricks and retouching techniques I employ to stitch more difficult panoramas (in particular, with people moving around in the image, and where the panorama has been shot handheld in a rather sloppy, imprecise way).
To better follow the tutorial, the (downsized) images used can be downloaded from here.
The main point to take away: Certain problems can be fixed both before and after stitching, but the time it takes to fix them can vary quite considerably. So experiment and get a feel for what type of problem is best fixed at which stage – stitching or retouching. And: The “Skew” tool in Photoshop is your friend.
The final panorama can be seen here.