Using the right point . I strongly recommend never using smaller than 12-point type size in your business correspondence. Although a smaller font may allow you to place more words on the page, the resultant document will be harder to read. Using capital letters . Resist the temptation to make text stand out by using capital letters for entire sentences or paragraphs.
Lowercase letters are easier to read.
Italics with lowercase are sometimes a better choice for emphasis. Only use capital letters for secondary heading emphasis or for some short headlines. Use different font styles sparingly . There are an infinite number of font styles such as Times-Roman and Helvetica. Once you are exposed to these through modern word processing software, there is the temptation to use many different font styles for emphasis.