Well, on the surface, the main advice would be the cliche but ever apt "be yourself". Have fun while also trying to make sure the one you are with has fun.
A bit deeper, and I know this sounds weird, but when you bathe before the date, use hot water and, if absolutely needed, a little non-scented soap. Clean well but don't eliminate your own natural scent. Above all, don't use fake scents, like scented shampoos, washes, deodorants, or colognes. You see, you want them to be able to become accustomed and attracted to your own natural scent, not something fake. Everyone has a natural scent, and that's a point of attraction. Smell clean, but smell like you. Scents can interfere with the natural pheromones your body produces.
If you're doing a movie, try to make sure it's got some suspense, but the most important thing is it being a movie you both want to see.
But one of my biggest pieces of advice would be to not be grandiose. If you are anything like me, you wish every time you took a [preferred gender] on a date, you could go to a nice restaurant, maybe a Red Lobster or something, share a bottle of nice wine with them, and then go to a drive in theatre together. That you could make every date the best night they ever had. But not only can that cost a lot of money and create unrealistic expectations for a next date, sometimes the simpler things are really better. I'm not saying a burger at McDonald's, but perhaps going to a little hole in the wall diner with them that you love the food at, or something home-cooked at your place. Maybe go out to a lake and lay out a cloth for an intimate picnic in the evening, holding each other as you watch the sun slowly sink beyond the horizon. Set the standards at you just being you.
It varies a lot, though. Those are just some of my personal findings.