Hi Carolina, 

I also feel uncomfortable talking about myself, I often feel that nobody would be interested so why bother. On the other hand, it is a wonderful way to meet new people, and trust has to start somewhere. I've made some corrections to your text;

About Me

So, actually I actually don't like to talk about myself on social websites like this one, but if it helps me with my writing, I can make an exception.

I'm been learning English for a few years, and I can heard it listen and read it very well, but writing is not my favorite thing to do because the grammar is a headache for me [you can also say "grammar gives me a headache"], and as for the speaking part - I guess I can do it, but I am so insecure about that... I'm shy... A lot!

Also, I've been learning Chinese for almost four months and its the same thing.

If you want to help me, thank you! I will help you with the your Spanish:)

So... that's all I guess.  greetings!! Thank you. [In English we don't use "greetings" at the end of a letter or introduction. This is a false friend]

About me

So, actually I don't like talk about me in social webs like this, but if it help me with my writing I can do an exception.

I'm been learnig English for a few years, and I can heard it and read it very well, but writing is not my favorite thing to do because the grammar is a headache for me, and the speaking part I guess I can do it, but am so insecure about that... I'm shy... A lot!

Also I'm been learning Chinese for almost four months and its the same thing.

If you want to help me thank you! I will help you with the Spanish:)

So... thats all I guess, greetings!!

So I acutally don't like to talk about me in social networks like this, but if it helps me with my writing, I can make an exception. 

I have been studying English for a few years, and I can hear and read it very well, but writing is not my favorithe thing to do because the grammar is a headache, and hte the speaking part I can do, but I am insecure about that because I am shy .. a lot. 

I have also been learning Chinease for about 4 months and it is the same thing. 

If you want to help me, then thank you! I will help you with Spanish :)

So ... that is all I guess, greetings!! 

About me

So, actually I don't like to talk about me myself in social webs communities like this, but if it will help me with my writing I can do make an exception.

I'm I've been learning English for a few years, and I can heard understand speech it and read it very well, but writing is not my favorite thing to do because the grammar is a headache for me/because grammar gives me a headache,. and As for the speaking part, I guess I can do it, but am so insecure about that... I'm shy... A lot very!

Also I'm I've been learning Chinese for almost four months and it's the same thing.

If you want to help me, thank you! I will help you with the Spanish in return:)

So... thats that's all I guess, greetings bye!!

     I do not enjoy writing about myself on social media sites, but if this will help me, I will make an exception. I have been studying English for a few years, and my listening and reading skills are good, but I do not enjoy the writing or speaking aspects of language studies. This is partly because of my grammar skills, but also because of my insecurity. I'm an introvert and become self-conscious. I have the same issues with Chinese, the other language I am studying. If you care to help me; thank you. I will help you with Spanish. 

     Hice algunos cambios en la estructura de la redacción y la sentencia. Hay muchos buenos profesores, tutores y compañeros aquí que son capaces de ayudar. Buena suerte.