One creates liquid vintner's keeping over (8)
I believe the answer is:
inventor
'one creates' is the definition.
'liquid vintner's keeping over' is the wordplay.
'liquid' indicates anagramming the letters.
'keeping' is an insertion indicator.
'over' becomes 'o' (cricket abbreviation).
'vintner' anagrammed gives 'inventr'.
'inventr' placed around 'o' is 'INVENTOR'.
(Other definitions for inventor that I've seen before include "Eg, Edison" , "Creator of new devices" , "Morse, perhaps" , "Creative type" , "Bell, perhaps" .)