Letterhead Layout Ideas – Templates for letterheads may be difficult to use, but there are some guidelines to simplify your task more simple. The first step is to look over the different letterhead formats. There are two basic types of formats for letterheads, the single-line type, as well as the double line version. Let’s talk about the differences between the two forms before going to the basic idea behind the letterhead templates. Your company letterhead templates will likely include your company’s name, your logo and a brief description of your company, and contact information.