Assemble Bag Body
1. Layer bag front and back with right sides together; sew together along sides and bottom (Diagram 6).
2. To shape flat bottom for bag, at one corner match bottom seam line to side seam line, creating a flattened triangle (Diagram 7). Measure and mark seam allowance 2" from point of triangle. Draw a 4"-long line across triangle; sew on drawn line. Trim excess fabric. Repeat at remaining bottom corner to make bag body. Turn bag body right side out. Press.