I’m going to secure newspaper crown (5)
I believe the answer is:
tiara
'crown' is the definition.
(tiara is a type of crown)
'i'm going to secure newspaper' is the wordplay.
'i'm going' becomes 'tara' (goodbye).
'to secure' means one lot of letters goes inside another (inserted letters are secured inside).
'newspaper' becomes 'i' (UK newspaper).
'tara' going around 'i' is 'TIARA'.
(Other definitions for tiara that I've seen before include "Jewelled head wear" , "Pope's triple crown" , "Pope's triple-tiered crown" , "Half a crown!" , "Women's head ornament" .)