Creating an exhibit for History Day is more than just sticking paper on cardboard. It's a multiple stage process that you will continue to change at every level.
Ryder and RJ (Woodbury Middle School) took pictures of their exhibit at every level of the competition. Look at the visual changes they made at every step and notice the difference between their very first board and the last one (that placed third at the National History Day contest in 2016!).
Making changes is part of the History Day process!