Ham awkward to carve (7)
I believe the answer is:
overact
'ham' is the definition.
('overact' can be a synonym of 'ham')
'awkward to carve' is the wordplay.
'awkward' indicates an anagram.
'to'+'carve'='tocarve'
'tocarve' with letters rearranged gives 'OVERACT'.
(Other definitions for overact that I've seen before include "Cartoon twenty four across" , "Exaggeratedly perform a role" , "Perform hammily" , "Don't expect Oscar" , "Play role exaggeratedly" .)