How i can improve to write and specking english my English writing and speaking?

I am Meraj; I'm from form Bangladesh ("Meraj from Bangladesh" isn't incorrect, but it sounds strange) . I am interested to learn ("interested in learning" is more idiomatic) English language . This is my ("a personal interest") personal interest. I am a designer and a business man . I've (the contraction "I've" in this sense is not commonly used in America, but I think they use it often in Britain) a little design firm called Easel Tech and I am CEO of easeltech (it seems redundant to say the name of the company twice).

I think everyone on italki.com will help me to improve and learn English language .

We will help.  I am learning Spanish, and kind Spanish speakers help me, so I try to help others in the community also.

How i can improve to write and specking english .

I am Meraj form Bangladesh . I am interested in learning English. This is my personal interest. I am a designer and business man . I have a little design firm called Easel Tech and i am CEO of easeltech .

I think everyone on italki.com will help me to improve my English.