Originally Posted by
cjsews
You can also draw your line from corner to corner and stitch 1/4 inch on each side.
that's what I do. I typically will chain down one side for a bit then go back and stitch down the other side. just faster for me. But, if you're good a stitching along bias edges, it might be faster to cut them apart then stitch. As mentioned, time it out for yourself and see which works best for you.
Good Luck !!