What I do at home before I leave for a photoshoot, is make sure I have my basic make up on, which for me is just eyes, because I don't really need foundation and it's easy to apply right before the shoot, and lipstick isn't necessary for some shoots, so I prefer to ask the photographer on their opinion once I see them.
I don't own a car or really drive one either, though I have a driver's licence, so I use public transport really often. Today I am going on a shoot in Kaunianen which is on the other side of Helsinki from my perspective, so I'm going take two different trains to get there. It's important I dress warmly and have enough time for any trains being late and so forth, so I leave relatively early. I'm usually way too early for stuff anyways, so that's a bit of a bad habit...
If you have any questions regarding the whole modelling thing and photoshoots, do ask, I'd love to answer if I can! I'd love any questions too, they would make my day <3