i have this gilr in my class that i think i build some comfort with, and kinoed once, by whipping snowflake of her face. I aslo neged and told her DHV stories. We chat about weekends and parties. Sometimes a little bit about school ( because i run out of things to say). So...to the point.

1) I need to kiss her. But how? Give me some techniques, some ideas. It is also pretty awkward, because both of us have cigarettes in hand and she smokes it before me. Anyways, help. Please.

2) If we do kiss. How long should it be? Is it french or just lips, do i finish first?

Help.

Sounds like you are in the LJBF zone.

In any case you need massive amounts of attraction and comfort before trying anything. Problem is that you already have a relation to this girl...

As for your kiss technique. Do not introduce the tounge too early, it is annoying for her and it is too sexual to start with. A kiss is a way to build comfort not seduce.

She can't keep an eye contact with me, and has seen me chatting with other ladies. Not very strong points but i feel i'm not in FZ.

ur not in FZ,ur kinda worst, she thinks ur a player,and she doesn't trust u,even if she is attracted to u, u'll have to earn her trust, and prove that ur just friendly with other girls.
Try proving that u are the loial and serious type of guy,and fix in a date in a quiet place,in wich u can foccus on her entirely.
About the kissing tehnique, no toungue befor her,try the gentle breeze type,conects more to the romantic section of her brain,

she seen and heard me chatting with other girls, cuz i sat behind her, she heard it wasn't flirting just chit chat, school and other stuff, was just being friendly. And not only girls, guys too. I'm pretty sure she thinks of me of Higher Value then her. She talks to almost nobody except me.

ok, the way i see it,she's just shy,or hurt from a former relationship,lost trust in guys.U have to seam inocent, and playfull,but not a clown cause u'll end up in FZ.Try that date thing, in a quiet place, see how it works.
And if it's a bummer,no biggy, get back to sarging...anyway best of luck to u