I’ve [28M] never been pass the first date, but some how made it to date three. I really want this to go well

I offered to pick her up and she said yes but I’m not sure what the etiquette is

When I pick her up do I open car door from inside, let her open it, or get out when I see her (give her a hug too? Not sure cuz first date we shook hands and second held hands for a little bit but didn’t hug or shake hands after that date) then open the door?

What about when I drop her off? Do I walk up with her and possibly give a hug? And can instead of that wait within 24 hours thing if things went well can I tell her I’d like to see her again then?

Also would new balance gym shoes be fine for an art gallery date? What about jeans and a flannel shirt?