nervous...

Hi!!

Well, today I want to speak about ..
Today in english class, we were doing the presentations, and I should do it....but I couldn't because I thounght about: and If I don't know what to say, and If I don't know how to speak..I don't know...It is just I can't do it...I'm afraid...
when I'm home I speak about my pesentation and I think I do it well, but when we are in class and the teacher start to choose people ...I start getting nervous and I can't , I think: well, the next day I will do it..but the next day I think the same..and I don't know how...I mean, what can I do...
I know it's "stupid" what I'm writing but, I really can't...and I don't know If I'm going to do it..well, I have to but...

well, I think I speak too much...