One of the biggest things I have seen destroy a nice design is bad use of typography.
A block of text should be inviting to read and not look like a chore. I’m going to provide a few principles and tips to help you avoid a lot of common typography mistakes. This isn’t a comprehensive article on the art of typography, it’s more of a “quick tips for better type design” kind of thing. I don’t like to use the word “rules”, because it makes people think they will go to jail for breaking them. I prefer the term principles, because they are a guide to help, not hinder you from great looking design. Remember these aren’t set in stone, they are suggestions, but as they say, “You first have to know the rules before you can break them”
1. Too many type faces
One of the biggest mistakes that people make, is to use too many typefaces and styles. Try to limit any piece to 2 or 3 different type faces and styles. This means that the body should all be one font and size. Choose one header and stick to it, maybe a subhead as well. Don’t be afraid to make the fonts very different from each other. Using 2 very similar fonts can look like you made a mistake and accidently chose the wrong font.
Consider keeping color, spacing etc, consistent or it looks like drunk flies walking all over the page.