For Engine
Roll out candy and cut a square; attach for window. Use white icing to outline window and windowpane. Attach candy.
Use white icing to attach candy for wheels.
Use red icing to pipe three outlines at front of engine. Attach candy to each end.
Use red icing to pipe three dots in center of engine. Use white icing to attach candy stars.
Use red icing to pipe zigzags at front of engine.
Use white icing to pipe zigzags at top edge of engine. Attach candy.
Repeat to decorate other side of Engine.