You are right in your advice but I don´t think i am in the position you think I am.
I´ve been with many girls recently but this one I like.
And like I said she will be here for like 1 month only, so I want to fuck her as many times as possible before she goes.

Great!

Moving on then, why would you behave any differently from how you were behaving? Seems like the only thing you need to change is to actually see her more often. So make that happen.

There's also a pretty good reason for her to come back to your place again: those earring and the umbrella.

So I told her that she should come watch a movie to my place but she told me she was going to the movies with some friends and that I should join, I tell her no and then I text my friend (the guy that was organizing going out to the movies) and ask him to cancel her. He does so and a few minutes later she texts me saying that he canceled and that she is going to my house that night.

Hooked up once? Your goal is to make her your girlfriend?

Dude, how experienced are you in having sex with girls?

My impression based on what you wrote is that you're thinking something along these lines:

"OMG I finally had sex with a pretty hot girl! I got so lucky! It's probably gonna be a really long time until I get the chance to have sex with anyone else this attractive, so I should try to get into a relationship with her to ensure that I can have more sex!"

If that's where you are right now, snap out of it, bro.

Have faith in the process of progress. Keep working on your skills instead of worrying about keeping any one girl around. There will be more girls. PLENTY. As long as you keep at it your results can come exponentially. Don't lock yourself into any one option out of scarcity. Abundance mentality.