Being Interested in Chinese

At present, I am interesting interested in Chinese. 
After joining italki, I saw notes which had been written by Chinese people learning Japanese. 

I corrected several notes, and but I wondered that If I were learning Chinese, then I could correct those better. 
My English skill is very poor, and I am still learning English, therefore I don't cannot find time to learn Chinese. 

When it I becomes good at English, I want to study Chinese.

Hello Masa. I would love to assist again. I think that you are improving Masa, because this note evidently has a lower amount of errors than the previous notes. This is commendable.  

1) The title "Being Interest in Chinese" is grammatically incorrect. The "being" is not necessary here. It may simply be rendered as "Interested in Chinese." A good title could also be "My interest in Chinese." I prefer this title.

2) There is nothing really wrong with "at present," however, I recommend using"currently," "presently," or "at the moment," which are more frequently used.  

3) I am sorry Masa, but your statement, "I am interesting Chinese," comes closest to meaning that you are an interesting Chinese person, but of course that is false in terms of the fact that you are Japanese and not Chinese. I am sure you meant, "I am interested in Chinese." This means that you are fascinated by the Chinese language.

4) The phrase "joining Italki" is lacking a preposition. I recommend "After joining Italki." 

5)  Your expression "Chinese people" is correct, but "chinese" should be written as"Chinese." 

6)  "Leaning" and "learning" are different words. It appears that you meant"learning." "To lean" means to place your body in a slanted position upon or against an object. Contextually, this word does not fit. 

7) Your phrase "and I am leaning English," is contextually satisfied by the insertion of"still," to read, "and I am still learning English." 

8) In English, it is generally recommended not to begin a new sentence with "therefore." When "therefore" is used, a simple comma before it will suffice, and then the statement is continued. So it should be, "My English skill is very poor, and I am still learning English, therefore I cannot find time to learn Chinese." 

9)  The phrase "When it" is incorrect contextually, and should be "When I." The word"becomes" should be "become," since we changed "it" to "I."

I must commend this attempt Masa. The errors in this note are noticeably lower than the errors in the previous notes.