Tense pose with painter, rising painter (6)
I believe the answer is:
artist
'painter' is the definition.
(I've seen this before)
'tense pose with painter rising' is the wordplay.
'tense' becomes 't' (abbreviation used in many dictionaries).
'pose' becomes 'sit' (sitting is a kind of posing**).
'with' is a charade indicator (letters next to each other).
'painter' becomes 'ra'.
'rising' says the letters should be written in reverse (going up in a down clue).
't'+'sit'+'ra'='tsitra'
'tsitra' written backwards gives 'ARTIST'.
(Other definitions for artist that I've seen before include "Constable, perhaps" , "Expert" , "Traits (anag)" , "Skilled person" , "Painter, sculptor etc" .)