Pull the petals free from one rose. Lightly coat each petal on both sides with egg substitute, using a small paintbrush.
Sift a small amount of sugar over the coated petals, turning them carefully to coat both sides. Set on wax paper to dry at least 1 hour. Repeat procedure with remaining roses, egg substitute, and sugar.
Note: Substitute other edible flowers, if desired. Many grocery stores carry prepackaged edible flowers.