Why do i feel nervous when i talk in english with a person who is a native speaker ?

Well, i feel very nervous because i'm not sure if the person can understand me when i am talking about any a situation. i sometimes feel bad when he/she tells me: asks "excuse me, can you repeat that, please?".That really kill me. I was trying to practice more english watching tv or listening to music but it's very difficult if you don't meet people to practice. Some video games could can you help to meet new people from any country. That may be a good solution.

If i have there are mistakes in my wrinting, i'm really sorry. about that

Christhian. Unless you have been brought up bilingual then you will make mistakes. Native English speakers make mistakes in their writing and speaking! Everyone is nervous on skype and it should not 'really kill you!!' when people ask you to repeat yourself. We are all human and people on this site only want to help :)