Finish, annually, welcoming a time at home (6)
I believe the answer is:
Here is my best explanation:
'finish' is the definition.
'annually welcoming a time at home' is the subsidiary indication.
'annually' becomes 'pa' ('p.a.' can be a synonym of 'annually').
'welcoming' means one lot of letters goes inside another (in sense of \'inviting in\').
'time' becomes 't'.
'at home' becomes 'in' ('in' can be similar in meaning to 'at home').
'pa' placed around 'atin' is 'patina'.
(Other definitions for patina that I've seen before include "Fine coating on surface", "Surface coating that comes with age", "well-worn surface", "Sheen produced by age and polishing", "Film on copper or bronze", "Surface shine", "Green coating on bronze", "Green gloss on old bronze", "Developing surface film; sheen" and "Sheen acquired from constant handling".)