Popular Topics: Stay updated with new topics or popular topics on other blogs you follow.
Engage readers with well-researched and creative blog posts. At the end of it ask questions or feedback from them.
Formatting - Your post need not be a circus. If you are not good with formatting, then stick to a theme that is light and descent in colors and the post layout. If you are good with trying new stuff then use that skill to better express through colors, fonts and layouts. Avoid colors that are dark and fonts that are overtly bright.