Fine and subtle detail in great neckwear (8)
I believe the answer is:
niceties
'detail in great neckwear' is the definition.
'niceties' can be an answer for 'detail' (thesaurus). I'm unsure of the 'in great neckwear' bit.
'fine and subtle' is the wordplay.
'fine' becomes 'nice' (I've seen this in another clue).
'and' is a charade indicator (letters next to each other).
'subtle' becomes 'ties' (I am not sure about this - if you are sure you should give a lot more credence to this answer).
'nice'+'ties'='NICETIES'
Can you help me to learn more?
(Other definitions for niceties that I've seen before include "Delicacy" , "delicacies" , "Degrees of precision" , "Fine points" , "Shades" .)