Something wrong in them or me?

Everytime seems when I'm trying to use some sentences in the language that I have learnt since kindergarden- English, people don't understand or misinterpret me, in the end seems I have said something wrong. My fren said that my essay is hard to understand as I wrote to complex and I have my own style of writing that not all people can understand, but as long as the lecturer understand, then it's enough..haha. Thus, anyhow any people always misunderstood and even put the blame on me, I don't feel anything as I think maybe this time they dun understand my language, or maybe I wrote in a too deep language. Okok, maybe next time we try Bahasa Malaysia which I think it makes thing easier for all of us..Haha.