Common mistakes in post-Halloween decor include rushing to Christmas themes too soon and mistaking subtle holiday accents for lazy decorating. Removing all fall elements abruptly causes visual whiplash and disrupts cozy moods. Overloading with bright Christmas reds or Santas before Thanksgiving diminishes the unique charm of the season. Instead, keep warm fall palettes and add gentle winter touches to maintain balance. Mistaking subtlety for lack of effort can lead to chaos rather than calm. The best approach is intentional layering and pacing each holiday’s presence thoughtfully.