Lay the Ripstop Nylon 10D fabrics on top of each other and pin them together along each edge, about 1 cm from the edge.
Also, pin the black webbing straps with the LB-LW buckle attached on one of the longer sides of the blanket (the exact distance between the straps is up to you — we placed them 70 cm apart, meaning 35 cm from the center line of the blanket).
Since the blanket will be sewn inside out, remember to attach the straps with the buckle facing inward, so that once you turn the blanket right side out, the straps and buckle will end up on the outside (see photos for reference).