Produce narrative: pointed article about a group of sailors (4,1,4)
I believe the answer is:
spin a yarn
'produce narrative' is the definition.
I know nothing about this answer so I can't tell whether this works.
'pointed article about a group of sailors' is the wordplay.
'pointed' becomes 'spiny' (I am not sure about this - if you are sure you should give a lot more credence to this answer).
'article' becomes 'a' (the indefinite article in English).
'about' is an insertion indicator.
'group of sailors' becomes 'RN' (Royal Navy).
'spiny'+'a'='spinya'
'spinya' placed around 'a' is 'spinaya'.
'spinaya'+'rn'='SPIN A YARN'
Can you help me to learn more?
(Other definitions for spin a yarn that I've seen before include "Pin Aryans down to tell a tall or invented story" , "tell a complicated story?" , "A textile worker might" .)