Get the rite system templates from a retail outlet. You might be lucky to encounter prefabricated programs that you can fill in the material. If this does not really care deluxe, you can only use the style and layout for your own figure. You just need to hold on memory what it looks like or if it is flashy, but you need it to make them at home.
Try not to make your paragraphs longer than 3 or 4 lines. When your paragraphs are short, people will read them easily. But if they are long, it will seem overwhelming to people. The colors you use in your newsletter design is important as well. So you should know a little about colors psychology. It's not hard. You must already know about the effect of every color on people, before designing or choosing your newsletter template.