Bold, geometric pattern uses contrast between light and dark to create optical illusion. Tools required - Creative Grids Non-Slip 60 Degree Ruler by Krista Moser; fabric marking pen. Material requirements include: 5/8 yd each of 3 shades of purple: light, medium, and dark; 5/8 yd each of 3 shades of coral: light, medium and dark; 5/8 yd each of 3 shades of gold: light, medium and dark; 1/4 yd each of 3 shades of blue: light, medium and dark. 'Entangled Sky' quilt pattern, by Krista Moser, finished size is about 55" x 74".