On work surface or serving plate, assemble house with 8 cinnamon graham crackers as walls and chocolate frosting as mortar. Frost tops of remaining 4 graham crackers; place on house for roof. Place pumpkin seeds on frosted roof for shingles. Use chocolate frosting to attach licorice pieces to outline house. Use more chocolate frosting to attach shortbread cookie crisps on house for windows. In small bowl, mix white frosting and orange food color. Frost shortbread cookie windows. With small round tip, pipe chocolate frosting for window panes. Pipe RIP on remaining shortbread crisps.