... and we're going to go out in this weekend. She's a friend of a friend and we have been talking by facebook.
Everything is fine, instead of only one thing: I have a history of screwing this kind of dates.
What are the dos and the donts that I must remember to not make this date another disaster?
Thanks!

I have one question, what do you mean by "This dates" like first dates or anything specific?

Here are some of my recommendations:
Smile when you first see her
Go kino right when you first see her like hand on should, make up a fun handshake, or give her a hug (If she seems comfortable enough) because this will allow you to get her used to your touch
Keep good eye contact
Try using push/pull to keep things at an exciting edge
Be interesting ( Don't ask too many boring questions such as "How are you"
The most important one in any situation NEVER seem needy.

I don't know where your date will be so i can only give you the general stuff. If your date was somewhere specific, maybe i could give more advice. Make sure you're not in your head thinking shit like "Does she like me" or "am i doing this right" etc.

Anyways mate, have fun and enjoy yourself!

_________________
Cute girls, coffee, and cheese was the lifestyle i chose.

Hey Rockso, thanks a lot by your tips! It's good to see there are guys that cares about help each other.
Well, she just gave her number and I'm gonna call her to go out this weekend. It would be a first date, instead of I've already known her. I'm gonna suggest go to a bar or drink something.
Liked your advices. I've already read them on "The Game" and on the "Mysthery Method", but it was a good summary. I'll keep them on mind and try to apply them, with bravure haha!
Let's keep in touch then I'll tell you what happened.
Once more, thanks a lot!

I think Rockso already nailed it

-I've recently started using kino intentionally and it works wonders, finger fucked a "friend" 4 days ago... If done right and timed well it works wonders
-Don't forget to be cocky and funny!
-Lead!
-Learn how to get past shit tests (Google or use the search bar on the forum)
-Fuck your fears! Be comfortable. Your nervousness will be picked up if it's there.
-Learn proper posture.
-EYE CONTACT! EYE CONTACT! EYE CONTACT! I cannot stress this enough... Obviously don't try looking into her eyes when she's looking down at her meal but when you are talking or listening to her look into her eyes... Look away for a second or two and then get back to the gaze. When looking away look to the right or the left, never down.

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Aint no other option... The Best or Nothing!

Morena, I appreciate your help. I believe it will useful for the whole life. You know, I'm not trying to get all the girls I see, but be able to conquer that girl I believe it's good for me. And of course, let's practice the sedution's game until that day comes.
Well, tonight would be the night that I'd go out with the lady I said. But, strangely, people use to die in the date's day. A friend of her sister died and she accompany her to the funeral. Don't believe it's an excuse, but it's not the first time it happened to me... Okay, when it has to happen, will happen.
Thank you for the tips, thanks Rock so also. I'm going to apply that as soon as I can.
Hugs from Brazil!