Your dissertation is an important paper. When you are mostly done writing your paper, it is a good idea to seek help editing it. You can edit it yourself, however, it helps immensely to have someone who has no prior knowledge read it through. You conducted the study and you need to know that it makes sense to someone else and that you explained it well enough that someone with no prior knowledge can understand what you have written.
Plus, getting a pair of fresh eyes on the paper wouldn’t hurt you any. When you have spent so much time on your paper, you may find that your eyes are tired of looking at it. It makes it very easy to overlook an error when you have read through your paper several times. Sometimes your eyes will automatically correct some errors while you are reading it to, which makes it hard to catch some errors. That is why it is so important to get a second opinion. And that second opinion should be a professional one.
You want a professional to edit a paper of this magnitude. It is likely the most important paper that you have had to write to date and because of that, you would need to make sure that you present the best final copy possible. That is where a professional editing service comes in. they will take your paper and edit it. They utilize all of their resources to ensure that it is properly formatted, grammatically correct, properly spelled, and well-written. They can make suggestions on whether you should clarify sections of the piece or not. That is why you will need to make sure that you find a good service to help you.
You have another resource as well. That is an online tutor. These services do not come from a professional writer per se, but they can still be very effective. They can read it through and edit it for you. They have mastered writing several papers themselves and can easily accomplish editing yours.
Do not miss the opportunity of having someone edit your piece. It is the best way to ensure that it is written nicely. When it comes time to edit your paper, do not go at it alone. Find an expert to help you get it done right.