Check your lights, reflectors and horn. And please don’t forget to feed your hide. Make sure that all of the car’s lightbulbs are operating as they should. In fact, remove the lenses and, in the case of old filament-type bulbs, un-bayonet or unscrew and then refit them, just to make sure that their contact points are clean and bright. Also make sure that all reflecting surfaces are clean and shiny. Give that horn button a press as well.
Inside the car, that leather hasn’t seen any ample cheek action in a while and may be a tad dry and brittle. Give it a feed for a week or two before asking it to support any winter overindulgences. Ultimately, try not to leave your cherished car unused for the whole of winter. Airflow, heat and movement are key to the general mechanical and bodily wellbeing of automobiles.