Stand in artist's studio seeing animal beheaded (5)
I believe the answer is:
easel
'stand' is the definition.
(stand for an artist's canvas)
I can't explain the rest of the clue.
Can you help me to learn more?
(Other definitions for easel that I've seen before include "Painter's support" , "Studio frame" , "Stand used by artists" , "Artist's prop" , "Tripod supporting a canvas" .)