Drizzle graham crackers. Melt red velvet Candy Melts candy according to package directions. Break graham crackers in quarters and place on parchment-covered cake board. Use melted candy in cut decorating bag to drizzle diagonal lines in a criss-cross pattern over graham crackers. Chill until firm, about 3 to 5 minutes.
Dip graham crackers. Dip graham crackers about halfway into melted candy. Tap to smooth and remove excess candy. Place on parchment-covered cake board. Chill until firm, about 10 to 15 minutes.
Use melted candy in cut decorating bag to pipe lines on dipped graham cracker. Sprinkle lines with pearlized sugar. Chill until firm, about 3 to 5 minutes.