Covered, finished and left with help (8)
I believe the answer is:
overlaid
'covered' is the definition.
(overlaying is a kind of covering)
'finished and left with help' is the wordplay.
'finished' becomes 'over' (similar in meaning).
'and' is a charade indicator (letters next to each other).
'left' becomes 'l' (common abbreviation).
'with' means one lot of letters go next to another.
'help' becomes 'aid' (synonyms).
'over'+'l'+'aid'='OVERLAID'
(Other definitions for overlaid that I've seen before include "Put on" , "Covered on top" .)