Organizing your thoughts is where your opportunity for growth is at your current stage. You don’t seem to have a problem with putting lots of words on a page, but making all of those words and thoughts cohesive is another story. You’ll have to study the flow of the great nonfiction works so you can express your ideas more clearly.
You have yet to make use of any outlines, and that is to your detriment. The framework is a skeleton to which your writing must stay wedded, and so far you are creating the body and the flesh and the vessels as you go—this is a lot of unnecessary work. Understand the foundation on which you build each piece, and the only direction you can construct is upward. Fail to understand this, and your writing will spread out in all different directions and fail to become a real structure.