Stand out (7)
(Other definitions for obtrude that I've seen before include "Interfere" , "Redoubt (anag) - become noticeable in an unwelcome way" , "Barge in" , "Stick out from redoubt" , "Doubter (anag)" .)
'stand out' is the definition.
(I've seen this in another clue)
This is all the clue.
(Other definitions for shine that I've seen before include "Give out light; polish" , "Administrator for monarch who is a minor" , "Glow; polish" , "Mislaying" , "Beam" .)