1. Sew together a red stripe 2×21" strip and a white tone-on-tone 2×21" strip to make a strip set (Diagram 1). Press seam toward red stripe. Repeat to make nine strip sets total.
2. Cut each strip set into 10—2×3-1⁄2" pieces to make 90 segments total (Diagram 2).
3. Referring to Diagram 3, join two segments to make a Four-Patch block. Press seam in one direction. The block should be 3-1⁄2" square including seam allowances.
4. Repeat Step 3 to make 45 Four-Patch blocks total.