Changes from one day to the next can depend on the weather, the people you encounter, or your attitude.
Changes might stem from the way your schedule works or from unscheduled events.
Are you wearing different clothes? Have you eaten different food? Brushed your teeth at the same time?
Thinking about what changes over a 48-hour period can help you examine it more closely and notice the nuances.
Include some drawing or decoration in your page if you like. When you have filled it up, give your work a title. Write the date and your initials on it, too.