I would liketo point out that I have only done the inbetweens for these shots, so ignore any colour or clean up done here.
The top shot was doing some smeer frames. These are sometimes my favourites as they can produce some of the funniest frames in the film, and they are usually invisible to the norml veiwer, or really anyone who either hasn't gone through frame by frame, or accidentilly stopped on one of those silly frames.Honestly i can no longer tell if the frame is exposed for too long or not, as I am almost always looking for these frames, or I am all too aware of them to not see them. This makes judging them in retrospect a tough job however I feel the top one is the most agreegious offender so I think I might have gotten it right most of the time. Its just important to remember to not have too many on a row or they start becoming noticable.
the middle nd bottom ones are examples of more complicated shots for different reasons. The middle one has more motion in three dimensions, and rotation, which is my jam, and the bottom one has a lot of people in it. However all that really moves is santa and a couple of arms, so it seems complicated but really isn't.