Embellishes story of former leading actor on horse with sweetheart beside allotment (12)
I believe the answer is:
exaggeration
'embellishes story of former leading actor' is the definition.
I can't judge whether this defines the answer.
'horse with sweetheart beside allotment' is the wordplay.
'horse with' becomes 'exagg' (I can't explain this - if you can you should believe this answer much more).
'sweetheart' becomes 'e' (the middle letter or heart of 'sweet').
'beside' is a charade indicator (letters next to each other) (I've seen this in other clues).
'allotment' becomes 'ration' (I've seen this in another clue).
'exagg'+'e'+'ration'='EXAGGERATION'
'on' acts as a link.
Can you help me to learn more?
(Other definitions for exaggeration that I've seen before include "Overstatement - overestimate" , "Hyperbole" , "Something more noticeable" , "overstating the case" , "lie" .)