how I'm such a funny girl

I am Caicai. My English name is Elena, and well, I am a funny girl; I like to talk with other people, and make the conversation. So, I want to learn to speak English well, than so that I can talk with more and more people.

how a funny girl   Funny Girl

I am Caicai (.) and my English name is Elena. Well, I am a funny girl. (,) I like to talk with other people ,and make (the) conversation, (.) so , I want to learn English well, then I (than) can talk with more and more people.

You have a number of short sentences and it is easy to combine into longer sentences to make your article read smoother. Apart from that, please remember names of people and places and references to countries - such as England, English, China, Chinese - should have a capital letter at the beginning. Also the word 'I' and similar words such as 'I've' and 'I'm' are always in capitals wherever they appear in the sentence. 

How a funny a girl I am.

I am caicai. My English name is Elena. Well, i am a funny girl. I like to talk with other people and make the conversation, so I want to learn English well, then I can talk with more and more people.

[Good start.  Remember to capitalize the beginning of sentences and all proper nouns.]