See good artist reverses knitting pattern (6)
I believe the answer is:
argyle
'knitting pattern' is the definition.
(I've seen this in another clue)
'see good artist reverses' is the wordplay.
'see' becomes 'ely' (see is a place with a cathedral - e.g. Ely).
'good' becomes 'g' (abbreviation).
'artist' becomes 'RA' (Royal Academician, member of Royal Academy of Arts).
'reverses' shows that the letters should be reversed in order.
'ely'+'g'+'ra'='elygra'
'elygra' back-to-front is 'ARGYLE'.
(Other definitions for argyle that I've seen before include "Lozenge-shaped design" , "See 10" , "Diamond knitting pattern" , "Design of diamond shapes, based on a Scottish clan tartan" , "Plymouth - - FC" .)