Let's start, say, visiting people in line for awards (4,4)
I believe the answer is:
here goes
'let's start' is the definition.
(phrase used when one is about to start something)
'say visiting people in line for awards' is the wordplay.
'say' becomes 'eg' (short for 'exempli gratia', 'for example' in Latin).
'visiting' is an insertion indicator.
'people in line for awards' becomes 'heroes' (eg war heroes).
'eg' put within 'heroes' is 'HERE GOES!'.
(Other definitions for here goes that I've seen before include "Let's begin!" , "Words spoken before start of rash action?" , "I'm about to start" , "Gee horse (anag.)" , "Warning of impending action" .)