My opinion on blogging

Well, at first when we got this exercise to make a blog and every week write a post was not interesting for me. But after yes. I don't like to write about what we must to write, because sometime we got a topic which isn't interested me and then I don't know what could I write. I think this is a good practise the English language, but I worried because I make a lot of mistakes in my writing and it is unconfused so everyone could see my mistakes...