6. Proofread everything
There are two types of proofreading you'll need to address before you send your files to press.
covers what most people associate with editing: checking for grammar mistakes, typos, spelling and the overall flow of the language used in the ad.
Prepress proofreading ( or graphic proofreading)
touches on the visual appeal of the text from a graphic standpoint. Look for splitting words at the end of line breaks, the length of lines themselves and even text spacing. The biggest thing to be aware of is maintaining consistent line lengths when breaking sentences. Longer or shorter lines stand out and can really throw off the general uniformity in a block of text if not spaced properly.