No singer misuses facial jewellery (4,4)
I believe the answer is:
nose ring
'facial jewellery' is the definition.
'nose ring' can be an answer for 'jewellery' (I've seen this before). I'm not certain of the 'facial' bit.
'no singer misuses' is the wordplay.
'misuses' is an anagram indicator (I've seen 'misuse' mean this).
'singer' with letters rearranged gives 'sering'.
'no'+'sering'='NOSE-RING'
Can you help me to learn more?
(Other definitions for nose ring that I've seen before include "Leading band" , "jewellery" .)