Proofreading and copy editing are quality assurance procedures for written English. They quietly catch and correct imperfections in spelling, punctuation, grammar, and structure.
This attention to detail allows you to have confidence in the accuracy of your written communication. It eliminates errors, saves money, and impresses clients. It demonstrates to your readers that you take what you are saying to them seriously.
Engaging a professional proofreader and copy editor is an investment in quality, and quality pays dividends.