The worst is over. You already have the content, now you just need to clean things up and add the finishing touches. Think of it as a makeover.
Take a little time off
Get away from it for awhile.
YOU DESERVE A BREAK!
Then come back and look at it with a fresh eye. In fact, try to look at it through someone else's eyes who is not familiar with the topic.
Read it out loud and ask yourself these questions about...
Keep working on your paper until you can answer YES to all of the above.Then go on to proofread your paper.