Assemble and Reverse-Applique Remaining Units
1. Referring to Diagram 5, sew together two black polka dot 2" squares and two white polka dot 2" squares in pairs. Press seams toward black polka dot squares. Join pairs to make a Four-Patch unit. Press seam in one direction. The unit should be 3-1⁄2" square including seam allowances. Repeat to make a second Four-Patch unit.
2. Join a black polka dot 2" square and a white polka dot 2" square to make a side unit (Diagram 6). Press seam toward black polka dot square. The unit should be 3-1⁄2x2" including seam allowances. Repeat to make six side units total.
3. Center and trace Pattern B circle, including guidelines, onto each stabilizer 3-1⁄2" square. In same manner, trace Pattern C half circle onto each stabilizer 2x3-1⁄2" rectangle, and trace Pattern D quarter circle onto each stabilizer 2" square.
4. Layer a marked stabilizer 3-1⁄2" square atop a four-block intersection on quilt center, aligning marked guidelines with seams (Diagram 7). Referring to Reverse-Appliqué Blocks, Step 2, sew on traced circle, trim through quilt top and stabilizer, then clip seam allowances. Turn stabilizer through opening and press as before. With right sides up, center a Four-Patch unit under opening, aligning seams and positioning white polka dot pieces in black block corners and vice versa (Diagram 8). As in Reverse-Appliqué Blocks, Step 3, machine-appliqué layers together and trim on wrong side.
5. Repeat Step 4 to appliqué a Four-Patch unit in remaining four-block intersection.
6. Using marked stabilizer 2x3-1⁄2" rectangles and side units, repeat Step 4 in two-block intersections along quilt center edges (Diagram 9). If necessary, trim side units even with quilt center edges.
7. Using marked stabilizer 2" squares, remaining white polka dot 2" squares, and remaining black polka dot 2" squares, repeat Step 4 in quilt center corners (Diagram 10). If necessary, trim squares even with quilt center edges.