This writer's wearing fur maybe — a frilly covering? (6)
I believe the answer is:
pelmet
'a frilly covering?' is the definition.
(decorative border covering up curtain fixtures)
'this writer's wearing fur' is the wordplay.
'this writer' becomes 'me' (the person who is writing these clues).
'wearing' indicates putting letters inside.
'fur' becomes 'pelt' (synonyms).
'me' placed into 'pelt' is 'PELMET'.
'maybe' is the link.
(Other definitions for pelmet that I've seen before include "Strip to conceal curtain fixtures" , "Narrow border across top of window" , "Temple (anag)" , "Valance board" , "Ornamental strip above window to conceal curtain rail" .)