When typing the text use upper and lower case letters. This will make it easier to read. Don't have long paragraphs or you'll lose your place every time you look up. Start a new paragraph every sentence or two. Also, have your text double spaced.
Some people even go so far as alternating the color of the text for each paragraph.
Use unstapled pages for your text. Paper clip your pages and just before you begin, remove the paper clip. As you prepare your text, keep in mind that you will have to handle these pages and you want to do this as smoothly and quietly as you can. Do not have part of a sentence begin on one page and continue onto the next. End the page with a complete sentence and paragraph.