I like you. So,I want to make friends with you !

I love nature, the sky, the moon, [the] stars.
And I love freedom, too. <----- be careful when starting a sentence with and, does not normally work.
I would like make friends with anyone,wherever you in. [everyone]

Maybe you want to travel in China,
Maybe you want to learn Chinese or Cantonese,
or maybe you just want to say something to someone else.
Just call me.

I want to travel around the world.
So , I want to improve my English.

Maybe you can help me. [?]
Maybe I can help you.  

Yes, I think so.

Structure is alright and understandable, however, it needs to be changed to be more fluid. if I were you, I would write it like: 

I want to make friends with you!

I like nature, the sky and looking at the moon and stars.
Freedom is important to me too.
I want to make friends with everyone!

Maybe you would like to travel to China?
Maybe you would like to learn the language!

I want to travel the world, so I want to improve my english.

Can you help me?
I'll help you learn Chinese! 

Hope to talk soon!