Answer/Explanation: First, make sure you're paragraph is in KEATEAL form. Check for capitalization at the beginning of each sentence. Look for grammar mistakes such as using "They're" when it should "Their" or using a comma when it's needed. Do not use "I, me, my, mine, etc." (unless it's an autobiographic essay). If it is an informative essay, make sure the information is correct and correlates to your thesis statement. If it is an argumentative essay, make sure you keep your key ideas straight to the point with a good piece of evidence to back you up (don't forget the counterclaim). Those are some basic elements. Hope this helps!
**I also suggest using Grammarly to help you write your essays, in fact, I'm using it right now, it's really helpful. Also if you want your essays to sound a bit better use this website, quillbot.com. It helps you reword some stuff and it sounds a lot better afterwards.