Hi @legendaryofcows, welcome to steemit. Good to see another steemian in Wales.
In case you are interested the first Wales steemit meetup is taking place on 10 February in Lampeter :
In terms of what to post about maybe start with a series combining your interests of photography and cars for example My Favourite Cars, or Cars My Family Has Owned, or even Top 10 Cars in the UK.
Put one or more photos and a few paragraphs of text. For photos either use your own or find copyright free ones from sites like https://pixabay.com/
Also add a tag steemwales to your posts so other steemians in Wales can find you easily. We are just starting with that.