Crossword Genius

In short, possible Banksy work is set up (5)

Ross

I believe the answer is:

start

I'm a little stuck... Click here to teach me more about this clue!

'is set up' is the definition.
(I've seen this before)

'in short possible banksy work' is the wordplay.
I cannot really understand how this works, but
'work' could be 'art' (I've seen this before) and 'art' is found in the answer.
The remaining letters 'st' is a valid word which might be clued in a way I don't understand.
This explanation may well be incorrect...

Can you help me to learn more?

(Other definitions for start that I've seen before include "Take the first step" , "Jump suddenly" , "Begin to recoil?" , "Begin - opening move" , "Initiate" .)

I've seen this clue in The Guardian.
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