Outline all but first of paradigm shifts (7)
I believe the answer is:
diagram
'outline' is the definition.
(outline can mean a diagram or map)
'all but first of paradigm shifts' is the wordplay.
'all but first of' means to remove the first letter (all but the first letter).
'shifts' is an anagram indicator.
'paradigm' with its initial letter taken off is 'aradigm'.
'aradigm' anagrammed gives 'DIAGRAM'.
(Other definitions for diagram that I've seen before include "Drawing or blueprint" , "Explanatory figure" , "Explanatory illustration" , "Simple schematic" , "Schematic drawing" .)