Creative test to be entered by one with spirit (8)
I believe the answer is:
original
'creative' is the definition.
('original' is associated in meaning with 'creative')
'test to be entered by one with spirit' is the wordplay.
'test' becomes 'oral' (oral is a type of examination).
'to be entered by' means one lot of letters goes inside another (I've seen this in other clues).
'one' becomes 'i' (Roman numeral).
'with' is a charade indicator (letters next to each other).
'spirit' becomes 'gin' (I've seen this before).
'i'+'gin'='igin'
'oral' placed around 'igin' is 'ORIGINAL'.
(Other definitions for original that I've seen before include "Novel - archetype" , "New and unusual" , "First, earliest" , "Person of marked individuality" , "In first form" .)