Actually, this is an interesting question. As an example, here are the different ways I might write "I am confused about how to start a sentence." "I am unsure about how to start a sentence." "How would you start a sentence?" "All of my sentences sound the same." "It is annoying that all my sentences begin the same way." My examples are all basically the same idea just mixed up a little. Maybe, after writing, look at all your sentences and see if there is a way you could combine some of them. Also, if you can, reading is really useful. It will expand your vocabulary and maybe even your creativity. Hope I helped a little.

Kusudama

Today I made a "Kusudama."
"Kusudama" - a ball made from paper.
"Kusudama" is are very beautiful, it is they rcalls remind me about of spring in winter!

I have never seen a Kusudama before. They are very pretty.

The 5th wave(tome 1 ) and the infinite sea(tome 2 ) by Rick Yancey

Ohh I just finished these books . The theme Dystopia is so real and I really love that ! I studied in English literrature. I wanna other dystopia book's. Do you know?

*"Book" would make more sense. The word "Tome" is not used often. It reminds me of playing Dungeons and Dragons. The wizard might have a large Tome of spells.

*"I have studied English literature."

* "I want other dystopian books". Or " I want to read other dystopian books"

*"Do you know of any?"

Good job! I am jealous you can read books in another language. 

Other dystopian books:

The Hunger Games and The Maze Runner are very similar, I believe. 

My personal favorite is 1984 by George Orwell. 

As a bonus: All the books I mentioned have a movie adaptation. So you have another way to practice if it interests you. 

Enjoy!

Your English is excellent. I understood everything you wanted to express. I am no professional so I can only make corrections as a native:

About me, about my life.

Well, if there is someone that i know the best it is myself. I live in Argentina, exactly in Buenos Aires. I am 23 years old, yes, i think years fly too quickly. I must say that the neighborhood where i live is quiet, nothing compared with Buenos Aires city, full of cars, noise, and tall buildings(i am not saying that i hate it, but i am used to calmer places).
I love singing, in fact i went to singing lessons for 5 years. I learned a lot, a bit of italian pronunciation because my professor loved opera music and he taught me and my others partners some techniques to improve our voice quality.
Also, i like drawing, however i did not reach a professional level yet, but someday i will say: yes, i could!.
In my opinion, i think i am a sociable person, i like to give advices and i use to ask for an apology when i hurt someone´s feelings.
As a student, i went to school, I studied english languaje for six years(but i have lost the most part of knowledges i learned )and now, i am studying a career to become in the future into a professional.

*"I live in Argentina, exactly in Buenos Aires", would make more sense as " I live in Argentina, Buenos Aires to be exact."

*Capitalize I.

* "I learned a lot, a bit of italian pronunciation because my professor loved opera music and he taught me and my others partners some techniques to improve our voice quality." This one is difficult for me. Depending on what you want to get across; I would either add more information(of what you learned) and break the sentence up or shorten the sentence by removing some information. You start the sentence off with "I learned a lot.....", but only tell us two things you learned. You do tell us why your teacher taught you a particular thing and that is interesting, but the sentence was set up to tell us what he/she taught you. I hope that makes sense. 

*"however i did not reach a professional level yet, but someday i will say: yes, i could!".  Would make more sense as " However I have not reached a professional level yet, but someday I will be able to say: "Yes I have."

*I would think about trading "sociable" for another word. This is because "sociable" has a definition that leans more towards enjoying other peoples company. While that does not exclude being able to apologize for hurting someone; It does not necessarily include it either. I would switch out "sociable" for "genial", because "genial" can more easily fill both of the examples that follow in the sentence.

*"i like to give advices and i use to ask for an apology when i hurt someone´s feelings." Would make more sense as " I like to give advice and will ask for an apology after hurting someones feelings."

*"As a student, i went to school, I studied english languaje (language) for six years(but i have lost the most part of knowledges i learned )and now, i am studying a career to become in the future into a professional." Might make more sense as " As a student I studied English for six years, but have now forgotten most of it. I am now studying English to become a professional......." You did not specify what type of professional you wanted to be. I removed "I went to school" because it was redundant. 

I just wanted to repeat that your English is excellent and these are more guidelines than rules. I hope it helped more than it confused haha.