Help me to correct grammar and sense

One bad experience in my past that taught me an important life lesson was my inappropriate dressing for the party, where i was invited by my friend.
I feel that this situation helped me learn an important life lesson, because now I pay more attention to my appearance and I'm more careful with details.
First of all I started to choose my clothes more accurately , since this little habit can make you feel more confident.For instance if a boy is dressed in suits, he will be more confident inviting a girl to dance with him.
Secondly , I learned to pay attention to details. That time I didn't read the invitation, therefore I couldn't know that in the party I should have been dressed in special clothes. I felt stupid and promised myself to always read invitations and contracts until the end.

Last night party

Yesterday, I ate out with my friends in a pizzeria called Tabitas at San Fernando, a city which is 13 kilometers away from here. Then, we came back to the city where we live and we decided to go to drink something and chat between us about politics, unemployment, the opportunities to get a job than we have in relation to people who are elder than us... Later, we continue drinking like fishes and we started to do absurdities and make nonsense comments, we started to sing, dance and a lot of things that I can't remember today.

Despite all of these funny things (and the little hangover I have today) I can't keep calm because this month I'm trying to get a job but it's neccesary to speak English fluently (more or less) so, I'm trying to improve all these skills but my friends are a bit shy and they don't go out with me to pubs in order to practice English with native people. In addition, I can't find people who want to exchange languages with me English/Spanish to speak short conversations by Skype or in a similar way.

In short, I'm waiting for my birthday to celebrate all these obstacles that I need to get over if I want to reach those goals I told you before.