To play an artificial harmonic, fret the note in the left hand, then with the index finger of the right hand,
lightly touch the same string 12 frets higher.
Using another finger of the right hand, now pluck the string. As you do so, remove the index finger to allow the string to vibrate.
The sound will be an octave higher than the fretted note, but more delicate and 'flute-like'
There is no universal standard for how to write artificial harmonics,
the triangular brackets shown above are the most common - the number 14 indicates that
the string is lightly touched at this point, meaning the stopped fret will be 12 below this on the 2nd fret.