Take an appropriate amount of fret tying string. Make
your first loop 6-8 inches from the end.
Take the long end of the string and loop it over the
first loop, making a smaller loop that will hook over the fret.
Hook the smaller loop over the fret, keeping the first
loop intact. Pull the thread back and forth 6 times (3 times on each
side) keeping it as tight as possible.
Gently pull the last end under the fret, and stick the end of the
thread thru the loop. Pull the two ends tight and tie it off with
several half hitches. Cut of excess thread.