Work on a new look -- continue appearing in shot, getting good in certain lines (7,7)
I believe the answer is:
plastic surgery
'work on a new look' is the definition.
The definition and answer can be both related to thinking as well as being singular nouns.
Maybe you can see a link between them that I don't see?
'continue appearing in shot getting good in certain lines' is the wordplay.
I cannot really understand how this works, but
'continue' could be 'last' (I've seen this before) and 'last' is located in the answer.
'shot' could be 'pic' (short for picture) and 'pic' is present in the remaining letters.
'good' could be 'g' (abbreviation) and 'g' is present in the answer.
'certain' could be 'sure' (synonyms) and 'sure' is found in the remaining letters.
'lines' could be 'ry' (abbreviation for railway) and 'ry' is found in the answer.
No letters remain.
This may be the basis of the clue (or it may be nonsense).
Can you help me to learn more?
(Other definitions for plastic surgery that I've seen before include "certain operations" , "Bodily reconstruction" .)