12a 1 Greeting Victoria's first walking reins right away.(9)
2 letter greeting 1st letter of Victoria's 7 letter for reins - r.
5a 3 Freedom to omit overture and finale.(5)
7 letter word for freedom minus 1st & last letters.
10d 2 Off about one, giving vague impression (6)
2 Word expression for off 3,2 around the normal one in crosswords.