Sketch Madeline, a temptress, in part! (9)
I believe the answer is:
delineate
'sketch' is the definition.
(I've seen this before)
'madeline a temptress in part' is the wordplay.
'in part' indicates the answer is hidden within the clue.
'DELINEATE' is hidden within 'madeline a temptress'.
(Other definitions for delineate that I've seen before include "Outline" , "Trace" , "Indicate precisely" , "Sketch" , "Draw" .)