Do not mix flush left and centered
Flush left / ragged right text has a clear alignment on the left and none on the right. Text or headings that are centered above or below will appear to be lopsided, or not visually centered because of the uncertain right margin. In general, stick with one mode of alignment on a page. The only exception is centered headings work well with justified text.
Punctuation
Alignment
Paragraphs
Dashes
Quotes & Apostrophes
Caps
Underlined
Line Width
Justified vs. Ragged Right
Flush Left & Centered
