Sew blocks in each row together. Press seams between blocks in opposite directions from row to row and sew rows together, matching all seams carefully. Press the quilt.
Add straight borders to the quilt. Make the inner border from 3-1/2" wide strips cut from dark border fabric. Make the outer border from 5-1/2" wide strips. Use my straight border instructions to construct the borders and sew them to the quilt.
If you are a new quilter, don't be tempted to make borders that match the measurements along the sides of your quilt. Borders offer an excellent opportunity to correct inconsistencies, leaving you with a quilt that's in-square along its edges. So be sure to read the instructions if this is new to you.