
Can’t say how this translated when it’s not coming from a woman, but a little extra eyes contact is a good place to start. Engage with them both verbally and with your body. Yanno that active listening bullshit they tried to hammer into us as kids? Do that. Add some compliments. Idk how direct you wanna be but extreme friendliness often comes across as somewhat flirty
As a straight guy, I’ll put it like this: you can’t force flirting on someone. Forcing that is basically hitting on someone. Flirting is meant to be natural. It’s the romantic version of bantering, except you are testing boundaries. It’s a dance between two people that actively click with each other. To enjoy it, to savor it. With your eyes, your mouths, your necks, your hands, your waists, and your thighs. But it always start with a hint of physical and a ton of verbal. Good luck.