Decorate cookies. Using blue icing, spatula ice cookies smooth. Sprinkle bottom of each cookie with ½ teaspoon graham cracker crumbs.
Prepare decorating bag with tip 349 and dark leaf green icing. Starting at bottom of cookie, pipe overlapping leaves moving up in a straight line.
Prepare decorating bag with tip 1 and coral icing. Pipe straight line. Pipe small leaves along both sides of straight line.
Prepare decorating bag with tip 1 and remaining blue icing. Attach Finding Dory Sprinkles to cookie using dot of blue icing.
Makes 12 cookies.