Remove the tail from the head/body....A twisting motion seems to work well...Remove the first one or two segments of shell on the tail...Gently pull on the tail meat while pinching/squeezing the meat out of the shell with the other hand --- Or better still....remove a couple of segments of shell...put the meat in your teeth and gently pull while pinching the tail.....
Louisiana Crawfish Company
You do not need to remove all of the segments as the picture demonstrates....Only one or two...maybe three until you get the hang of it......HTH
PS......Only eat those crawfish with tightly curled tails after cooking...If the tail hangs straight out...discard it. It was dead when it was cooked...More often than not the meat will/could have spoiled, possibly causing food poisoning!!!