Artist dividing using shade (6)
I believe the answer is:
wraith
'shade' is the definition.
(I know that shade can be written as wraith)
'artist dividing using' is the wordplay.
'artist' becomes 'RA' (Royal Academician, member of Royal Academy of Arts).
'dividing' means one lot of letters goes inside another (inserted letters divide the word).
'using' becomes 'with' (eg 'fixed with glue' means 'fixed using glue').
'ra' put inside 'with' is 'WRAITH'.
(Other definitions for wraith that I've seen before include "Ghost, spectral apparition" , "Deathly apparition" , "Presence" , "looking pale and thin" , "Ghost-like apparition" .)