Women notice the little things. It's amazing how many guys don't get that.
1) buy some nice clothes. And I mean NICE, not dorky nice.
2) Get a good haircut.
3) Do some kind of exercise and drink lots of water for a few days, just to get rid of bloat.
4) Before you go out check every box: Put some gel in your hair. Trim your fingernails. Shine your shoes. Starch your pants and shirts (especially the collar). Shave well or trim your beard perfectly.
5) Don't go out alone. Women don't tend to trust guys who show up solo. At the same time: don't go pack hunting. 2 or 3 friends is best.
6) DON'T TRY TOO HARD. I can't stress this enough. Just be relaxed and cool, sit back, and see who comes to you. If nobody does that night it's not a big deal. Eventually a woman will be intrigued enough to approach you.
7) Once a woman shows interest be confident, like you've been there before. Wallflowers don't get laid.
And, of course:
8) scrub your back with a firm brush every time you shower. There's no greater turn off than b acne (lol spellcheck won't let me write the word). It might take a few months to have a real effect but it will.
Every woman you meet is sizing you up as a potential husband. Don't disappoint her.