If you wish to create an exhibit for all to see, it is preferred that you make it on Word or google docs. But you can also make on PDF.
Please do not make it on Power Point. And if there is any other presentation/writing platform that you wish to use, please contact me first. You can write as much as you wish. But it is better if you keep it fun and simple.
Don't hesitate to contact medieval philately if you have any questions.
Good luck! And we look forward to seeing your exhibit.