What Mistakes Do You Make Most Often In Your Writing? What Would Help You Fix This Mistake?

    A mistake that I make most in my writing is probably....hmmm, I don't really know. I think (if I don't fully proofread) the mistake that I make most often in my writing is being vague. When I write something, I write it like how I would understand it. When someone else reads my paper/writing, they don't understand what I'm saying, even though I do. I guess what I'm writing now is like an example of me being vague in my writing. Did that just makes sense?