There are also many free graphics available on the Web. Short 'catchy' headings will keep the reader's interest by leading them on and breaking up text into short readable sections. Long blocks of unbroken text are very hard to read. For evangelistic material, headings early on the page should not necessarily indicate the Christian nature of the content. If they do, avoid an 'in your face', 'you must get saved', preachy approach.
Quotes are eye-catching and make the reader want to find the context.
Revise and check Most printed publications go through a lengthy editing and checking process. Never let your first draft go online. Put it aside for a few days, then start again. It is vital to use a pen and a paper printout rather than trying to do it on-screen. Ask friends to check it too.