1. Cut and piece dark green check 1-1⁄2x42" strips to make:
2—1-1⁄2x72" inner border strips
2—1-1⁄2x56" inner border strips
2. Aligning long edges, join each short inner border strip to a short red swirl print outer border strip to make two short border units total. Press seams toward inner border strip. Join each long inner border strip with a long red swirl print outer border strip to make two long border units total. Press seams toward outer border strips.
3. Beginning and ending 1⁄4" from quilt center edges, sew short border units to short edges of quilt center. Repeat to add long border units to remaining edges, mitering the corners, to complete quilt top. Press all seams toward border units.