So with the past 5 or 6 relationships I managed to build, I would get attraction, but go into comfort without a kiss close... the most I'd ever get was a hug.

I've got a relationship with a girl pretty well lined up now, I've built attraction, I can tell because there's a lot of Kino initiated by her... for example, the other day, one of my friends accidentally touched my leg, and when I pointed it out to him, she suddenly joined in with the conversation and touched my leg rather deliberately. Other times she's just been outright touching me for no reason... she just does. I'm 90% sure this is attraction, but I have a little feeling she's just a touchy-feely type person. She doesn't tend to touch other people, or at least not that I know of.

She did tell me a few days ago about this problem she had, but I sorta saw it as a bit of a shit-test, where she wanted me to give her a solution to her problem, almost like she was trying to put me in the friend zone, I just laughed and talked about something else though.

She also brings up sex a lot in conversation, I'm not sure what to think of that.

I've decided that tomorrow I'm going to try to k-close, by isolating and then carrying it out, but I'm not sure if it's too soon or too late or what exactly to do to lead up to it. I kinda have a rough idea by asking her if she wants to go for a walk, obviously if there is enough attraction she'll say yes, and then I can escalate kino to the k-close. Any tips or advice?

When I say tips or advice, I mean on not screwing it up and getting stuck in the friend zone again.

So I kinda failed to even isolate... wth?

Seriously how the hell do I stop failing and start succeeding?