If you like to set up your decorations the same way each year, don't leave it to your memory. Write it down, take a photo of it and store in binder.

The above photo shows a carpet of fallen leave beneath nearly bare trees, with green grass in the background serving as a memory of summer gone by.

It's almost as if your brain is taking a new experience and flipping through the old photo albums in your memory to find out where it fits, which ultimately may help you better understand it.