Polish off some creation (3)
I believe the answer is:
eat
'polish off' is the definition.
(I've seen this in another clue)
'some creation' is the wordplay.
'some' indicates a hidden word (some parts of the word are used).
'EAT' can be found hidden inside 'creation'.
(Other definitions for eat that I've seen before include "Gobble up" , "Consume for tea" , "Feed" , "to do etching?" , "Corrode" .)