Some good questions there Andrasol.

Firstly on comfort , people feel comfort with people that are comfortable with themselves !
So the more comfortable you are in your self the more comfortable the girl will be around you !

So dont think in terms of some routine or something you have to say or do but rather in terms of how you can feel more comfortable in yourself.

Obviously you will feel uncomfortable at times but that my friend is where all true learning happens , outside your comfort zone.

Building comfort with a girl starts within you and comes through experiance.

Sexual tension is one of my favourite topics because of all the really quicks lays Ive gotten from using its incredible unexplainable power.

Firtly eye contact is a sure fire way to get sexual tension going almost immediately , cant over state the power of seductive eye contact. Quick note on seductive eye contact, you can break every few seconds. dnt make it weird by trying to stare her down but when you look at her just look into her eyes seductively. She will notice ..
next tip on sexual tension is to get close to her ... along with eye contact getting close will ramp up sexual tension nicely. loads of other tips but not really the time at the mo.

I normally dont kiss close girls in venues because it gives them too much validation and releases the sexual tension that was created between us. Also thats generally the end of the interaction as if feels weird after kissing a girl and then just hangging out , personal preference I guess.

If people (girls) tease you about been a player just shrug it off like you didnt hear them or just give a humble half smile and change the subject. Dont buy into others assumptions about you by getting into dialogue and explanations.

peace