Because newsletter templates are available in all variety of lengths and sizes, there is really no limit to the content that you could potentially write. Keep in mind, however, that you should probably keep down your word count to a level that people are comfortable reading. While you may think everything that you are spouting off is fascinating, it's helpful to first sit down and make an outline of what you want your main message to be, or what the major news is that you are trying to share.
If you would like to refer to a scrapbook template, you may be able to find a lot of options open for you to take advantage of. Templates are more of a ready made idea, that you can incorporate in your own work. A lot of people uses templates to be able to attain a fast finish product if they need that unexpectedly. Now, you may be asking where would you be able to find available templates for your scrapbook?