ABOUT MY LIFE

WELL, I'M FROM VENEZUELA AND I WANT TO LEARN ENGLISH, I NEED SPEAK WITH FLUENCY SO I NEED TO PRACTICE. I STUDY GEOLOGY, MY FAMILY IS SO GOOD. I HAVE TWO BROTHER AND TWO SISTER. IN THE UNVERSITY I HAVE EXCELLENT TEACHER BUT THE SAID ME YOU NEED SPEAK A PERFECT ENGLISH BECAUSE YOUR CARREER IS BETTER WORKING IN ANOTHER COUNTRY. YOU NEED PREPARE MORE. MAKING COURSES ABOUT PETROLEUM. I LOVE TRAVEL AND MY BIG DREAM IS SPEAK ENGLISH PERFECTLY.

I THINK I NEED MORE VOCABULARY, PRACTICE FOR SKYPE OR I DON'T KNOW.
MY EMAIL IS GAHR1996@GMAIL,COM
IF YOU WANT TELL ME.
THANK YOU.

Please remember not to write in capitals (upper case).  I seems as if you are shouting and you are not, are you?

ABOUT MY LIFE

WELL, I'M FROM VENEZUELA AND I WANT TO LEARN ENGLISH. I NEED to SPEAK WITH FLUENCY SO I NEED TO PRACTICE. I STUDY GEOLOGY, and MY FAMILY IS SO GOOD*. I HAVE TWO BROTHERs AND TWO SISTERs. At UNVERSITY I HAVE an EXCELLENT TEACHER BUT THEy told ME YOU NEED to SPEAK ENGLISH perfectly BECAUSE YOUR CAREER will be BETTER if you are WORKING IN ANOTHER COUNTRY. YOU NEED to PREPARE MORE, and take more COURSES ABOUT PETROLEUM. I LOVE to TRAVEL AND MY BIG DREAM IS to SPEAK ENGLISH PERFECTLY.

I THINK I NEED MORE VOCABULARY, PRACTICE on SKYPE OR I DON'T KNOW.
MY EMAIL IS GAHR1996@GMAIL,COM
IF YOU WANT to TELL ME.
THANK YOU.

Very well written and that is awesome that you are working so earnestly on your English. Please remember that if you have a conjugated verb in the sentence, the verb that follows must be an infinitive. For example: 

If you want TO tell me (want is conjugated and, therefore, must be followed by 'to tell' instead of tell)

Also, you stumbled on a tricky grammar point; 'to tell' vs 'to say'

They told me

They said to me

Here is an article that can help you more with this common mistake: 

https://www.englishclub.com/vocabulary/cw-say-tell.htm

*My family is so good. This sentence sounds a bit awkward to me. I would say something like:

My family is so good to me

My family is great

I love my family

My family is very important to me

etc

Finally, as was mentioned by Leigh Mumford, Caps makes the reader think you are yelling. Try to only use it for emphasis or, if you are in fact yelling! 

Hope this helps!