It is ultimately necessary for that person to have self-awareness. If I am dating someone and they engage in too much small talk I will assume they are dull and have nothing special to offer a relationship. The people that I've met in the past that have stayed in my circle of friends are people who are smart and have a "curious" disposition; they are people who can truly look at themselves and identify where they are doing well and where they need help. These people, to me, are people who succeed. That is what I look for in someone I am dating.
Making me laugh a lot and letting people know about me. I'm used to being hidden from others. I've never been popular or important in the eyes of my peers, so even friends are some times hesitant to proclaim that they're with me. So if I find a man who makes me laugh and who will boldly announce that I'm there with him, then he has a way better shot with me.
Nothing specifically. Honestly there are different things that stick out for every guy. A guy I dated knew I loved coffee and stopped by our local coffee store before our study date because he knew I was having a bad day. He even texted my best friend and asked what I liked haha little things like that
Not judging which is a trait not many people have, having a convo with a guy and it turned to games and call of duty and I said I love adventure/rpg games and he gave me this weird look. Or if I say I like 80s amount of people who look at me weird is astonishing.