The Details are important _ Pay special attention to the details. They affect your readers very much. Details like alignment of the texts and the number of lines which your paragraphs include, can make readers bored or can interest them. 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.
Crafts Sites. For a broader category, craft sites are the next best places to find templates. This is broad in a sense that they have listed sites for different types of arts and crafts like beadworks, candle making, and ceramics. Not all these do_it_yourself sites can literally hand out free templates, but will give you enough inspiration and idea to creating one. But it is best to browse on categories like drawing, gifts, paper crafts, patterns, or rubber stamping. Scrapbooking is also under this category.