Women should dress appropriately as well. Classy. Or jeans and boots. No low cut stuff, Christian males will run away -hopefully. Makeup or no makeup whatever, but tone it down.
Don't drown yourself in perfume. Gossiping or bringing up people he doesn't know and venting about them is a BIG no no. But it might be could for him to know, so he could dodge that bullet if that's something that really bothers him. On the second date, if you guys are getting the hint that you both like each other, maybe forget to bring your cardigan or extra coat and ask to wear his
teehee.