Quilters use a ¼ inch seam allowance unlike most dress maker patterns that use a 5/8” seam allowance. Sewing an accurate ¼ inch seam ensures the pieces will fit and the quilt will lie flat.
Seams are often pressed in alternate directions in order to reduce bulk and make matching points easier. At times seams are pressed open but this method allows the fibers from the batting to migrate through the openings.
Quilters like to use chain piecing to help with accuracy and to speed up sewing.
See sewing seams
Also see – chain piecing