My life

Hello everybody! My name is Jader, and I'm 28,. I was born in Florencia, Caquetá in Colombia, and currently I still live here., what about me, I'm studying for my Bachelor's of English at the university, where currently I'm in my 7th semester. and I really enjoy studying English because I love learning a new language., Since I've started learning English I've had the opportunity to establish communication with American. <--- Do you mean, "I've had the opportunity to establish communication with "an American", "Americans", or "America"? 
Despite of I got getting good grades in my assignaments, I've got a big problem., When I have to speak out loud I feel so scared, got nervous that I get tongue-tied.,  I have used different methods for improving my speech reaching god speaking but it has not been enough., But I won't give up!, is for that reason I'm here on This is why I joined italki.  Italky,   I'm looking for people who can help me to improve my spoken English. I'm sure it will get better. I think It will be better. Regards from Colombia!!!

Your English is actually pretty good, despite all the red marks above.  ;-)  You seem to have a tendency to make run-on sentences.  This means that you use commas instead of breaking up the run-on sentence into shorter, correct sentences. 

I definitely have the same problem as you.  I get so nervous when I have to talk in Spanish that all the words go out of my head. (This means "I forget everything.")  

We are all here for the same reason, so relax! I'm sure you will do great. :-)