During the day, Fantasyland is full of hustle and bustle so taking in the details is a little difficult. I've found that walking around after the fireworks watching crowd has cleared is the best way to poke around and see some details that you may have missed during the day. Park open is really a great time as well (some of the pictures are from park open), but a stroll through the parks at the end of your visit is a pretty great way to unwind.
Peeking into shops, looking up and seeing facade details, and sometimes it's just you standing in an area. It's pretty great.
Forgive my poor quality pictures, iphones at night y'all!