Gold whiskers edging around moustache style (6)
'gold whiskers' is the definition.
'walrus' can be an answer for 'whiskers' (I've seen this before). I'm not certain of the 'gold' bit.
I don't understand the remainder of the clue.
Can you help me to learn more?
(Other definitions for walrus that I've seen before include "Large tusked marine mammal", "'The time has come', the . . . said", "whiskers", "Aquatic mammal", "Large sea mammal".)