In making {TAIL ~ the seam} along edge A, it may be easier to turn the fabric over in order more accurately to follow edge A in making {HEAD ~ a second seam} 
In making { TAIL ~ the seam } along edge A , it may be easier to turn the fabric over in order more accurately to follow edge A in making { HEAD ~ a second seam }
OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD