Carve stone to finish new burial plot (7)
I believe the answer is:
engrave
'carve' is the definition.
(I know that engrave is a more specific form of the action carve)
'stone to finish new burial plot' is the wordplay.
'to finish' indicates one should take the final letters.
'new' becomes 'n' (abbreviation as in New Testament NT).
'burial plot' becomes 'grave' (I've seen this in another clue).
The last letter of 'stone' is 'e'.
'e'+'n'+'grave'='ENGRAVE'
(Other definitions for engrave that I've seen before include "Incise" , "Carve into surface as of medal" , "decorate with style?" , "Rang Eve (anag.)" , "Carve (a design) into hard material" .)