Copyediting gets a manuscript/material ready for publication by making sure it is clear and accurate. The University of Kansas School of Journalism and Mass Communications has a helpful list of what copyeditors (like me) do:

• Check the facts (names, dates, times, places, past events, etc.).
• Check the math (percents, totals, tax rates, etc.).
• Ensure that the writing is free from libel and conforms to the ethical standards of the publication and the profession.
• Smooth/streamlining prose to make it flow cleanly from one point to the next.
• Trim unnecessary words to make the prose clearer.
• Cut to fit in a designated print space while preserving the most important points.
• Eliminate jargon and paraphrasing convoluted quotes to make the writing more understandable.
• Ensure the grammar, spelling and punctuation are correct.
• Ensure the prose conforms to style (AP, Chicago, APA, etc.).
• Ensure all charts, maps and graphics are correct.
• Proofread print and online pages.
• Write clear, accurate, engaging display type – headlines (print/web/mobile), sub-headlines and overlines, summaries, photo captions, teasers, refers – anything that stands apart from the actual text. This is so important because display type is the only part some people read.

Adding this service to a graphic design project can be exetremely benficial. It will decrease the time length of the project because less time is spent going back and forth correcting errors toward the end of the project. It will also make the material more polished. 

Our facilities support wellness causes, including the National American Heart Association's Wear Red Day. Our employees showed their support by attending the Go Red for Women annual luncheon.

Our facilities support wellness causes, including the American Heart Association's National Wear Red Day. Our employees showed their support by attending the annual Mid-South Go Red For Women Luncheon.

Commentary: When copyediting this report, I researched the official names and titles of the American Heart Association and luncheon. I found that both names were written incorrectly.

This program promotes efficient water use in homes and businesses throughout the country by offering a simple way to make purchasing decisions that conserve water without sacrificing quality or product performance.

This program helps homeowners and businesses buy products that use less water without sacrificing quality or performance.

Commentary: The "after" sentence is more concise and easier to digest, yet it conveys the same information as the "before" sentence. 

EnergyBoost funded no less than seventeen employees to participate in the workshop. The skills they gained compliments the knowledge acquired during EnergyBoost's weekly InSight Meetings.

EnergyBoost funded no fewer than seventeen employees to participate in the workshop. The skills they gained complement the knowledge acquired during EnergyBoost's weekly InSight Meetings.

Commentary: I changed "no less than"  to "no fewer than" because "employees" is a countable noun. I changed "compliments" to "complement" for two reasons. "Compliment," which mean to give praise, is often confused with "complement," which means to add something in a way that improves it. In this case, we want to use the word "complement." I dropped the "s" at the end of the verb because the subject is plural.