the girl asks me through text what im doing and I say I'm playing guitar (btw is this a DHV or a show off), so she asks me if im good and to record her and sing for her. My answer is i think im ok and nothing is free there must be some exchange for my singing.

Background: the girl is beautiful and flirty, probly many guys hitting on her, so I think her asking is like a hoop or shit test

Not to be cocky, I'm actually really good at guitar and won competition before. but the thing is i dont know when girls ask if im good should i say it or be humble like i would with other things (i feel a chance of DHV here but also dont wanna be showy).

I get a lot this kind of text like can u send me ur guitar playing. should i send it? will they be impressed with my skill or just think this AFC is qualifying himself for me hahah. So far ive never send any because i dont wanna go through hoop.

Lastly, any cool technique to attract girls with guitar? i can sing but not superb. Thank you.

Yeah definitely wouldn't send them you playing. That should be something they "get lucky" about, not something they get on request.

Whether you're good or not I reckon being modest is better, if you are good then it'll be that much more impressive if you haven't played it up.

Attracting women by playing guitar? Probably best done in a "moment" i.e. she's already feeling you and you can amp up the vibe that way. But sending her something to listen to in her own time does smack of qualifying yourself.

https://www.youtube.com/watch?v=lSyDiAZu2uA

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If something's not fun, it's not worth doing

"I don't do recordings, at least not outside of the studio.*Joke* If you want you can come around to my place and I might play a song for you." Leave it at that. If she asks will you sing for her say something like "That'll cost you." It's called flirting. You need to flirt back with a woman in order to progress with her. If you're flirting through text and get her to meet up with you proceed to take it to the next level.