It is highly unlikely that you will get a masterpiece of an essay the very first time that you decide to write something down. Hence, be prepared to write multiple versions of what you might be trying to convey. When you write multiple drafts, it will become all the more clear as to how you would want the essay to flow. This might not be apparent right away, and only upon practice, you can improve your essay writing ability. You need to be prepared to write repeatedly, if you wish to write a really good essay.