Send ★ for a talent headcanonSelina looks super classy, like she only eats the finest food and listens to the finest music, but the one thing she's super good at is singing hair metal songs. Like, lady's got a range and that's her favorite thing to use it with. Sometimes she'll disguise herself and go to karaoke bars to show off, because that's who she is.
Send ❄ for an AU headcanonSelina would be the head of an all female pirate ship, taking down the navy and freeing slave ships.
Send ⌆ for a fight headcanonSelina's main method of fighting is "stay far enough back to use your whip and then leave", but if she does have to fight, she fights dirty. She is absolutely a member of the "claw eyes, pull hair, jump on kneecaps" school of fighting and she will basically do whatever will cause the most damage to her opponent.
Send ♡ for a friendship headcanonSelina has never actually been able to make many real friends, but since she's something of an introvert, it's never really bothered her. She does, however, have Maven, her assistant who basically organizes her entire life and keeps her on track. Between her and Holly, those are about the only real friends Selina says she has.
Send ♥ for a romance/sex headcanonSelina isn't really big on romance. She likes little bits of romantic-type things, like sitting together quietly or spending some time together, but she's never really had much of a desire for a romantic life. She's very content to be on her own and remain that way.
Send ✜ for a fear headcanonSelina's biggest fear is being controlled. The idea that something could happen to her to make her unable to control her own life is horrifying to her, and has definitely colored many of her relationships with people, especially romantic ones.
Send ☾ for a sleep headcanonSelina produces a fairly ridiculous amount of body heat when she sleeps, so she gets overheated really fast. She'll do everything she can to get her room as cold as possible and then wrap herself up in covers, because otherwise she'll wake up in the morning sweating from the heat.