Below are the instructions for a jack-o-lantern fruit tray I made for a fall event using cantaloupe,
blueberries and grapes. I made the templates out of a cereal box. I covered them with wax paper to keep them dry. Plus I didn't really want the cereal box cardboard touching the fruit.
To get the roundedness for the circle I needed for the pumpkin, I scored the cardboard along the edge of my counter. I did the same for cardboard I used in the mouth.
This enabled me to make a nice round circle with the cardboard. (I scored it before I covered it in wax paper.)
Then I placed the round template in my fruit tray and added the grapes.
When all was in place, I gently lifted out the templates and viola...a jack-o-lantern fruit tray.