Optimize your WordPress to load quickly. The loading speed of your website directly affects visits and conversions on your website.
Expressing something is the trick. Getting into reader's shoes matters as we write.
Grammar - Depending on the language you use, blogging just makes it imperative that you are reasonably good with your grammar skills and proficiency if not a master. Remember your audience is a mix of both; the ones who are experts and the ones who are not.