I did a quilt recently with embroidered blocks. I cut the fabric into strips WOF making the width 2 inches wider than my finished blocks. Then with a water soluble pen drew lines to block off the blocks and chain pieced the blocks leaving the strip intact. After I got the embroidery done on that strip I cut on the lines and proceeded to the next strip. After all the blocks were done I then trimmed them up. IMHO it is a waste of fabric to cut each one individually. The way I mentioned at least gives you all the blocks the same size before trimming.