It's very important to keep your modules consistent, using a 10 to 14 point text size, an easy to read font style, and use bold and italics to emphasis important information. It's also important to create a Learning-Objects Database (a repository to store files, graphics, audio, video, or any necessary course components that may be used more than once) and maintain it. By maintaining your Learning-Objects Database, it will save you time. You'll be able to find, sort, locate, and upload desired components to use in multiple courses.