From painting, standing to get more (5)
I believe the answer is:
extra
'more' is the definition.
(I've seen this before)
'from painting standing' is the wordplay.
'from' becomes 'ex' ('from' in Latin).
'painting' becomes 'art' (painting is an art).
'standing' shows that the letters should be reversed in order (in a down clue, letters stand up).
'art' written backwards gives 'tra'.
'ex'+'tra'='EXTRA'
'to get' is the link.
(Other definitions for extra that I've seen before include "Additional - run - actor - newspaper edition" , "particularly" , "Minor player in film" , "No-ball or wide, perhaps?" , "late edition" .)