Answer :

it is very simple but very important
1 they do not make spelling mistakes...
2 they have a strong grammar concept...
3 they stay away from plagiarism
4 they try to summarize whole topic to make it easy to understand
5 they try to write different topics in comparison...    :)
- They use academic language
- They have correct punctuation
- They have correct capitalization
- There are extremely little to no spelling errors in their work
- Their sentences flow and aren't run-ons
- They have good transitions especially into each different paragraph
- Their quotes are well integrated
- They use evidence to support each of their claims
- Their thesis is well thought out and specific, not vague 
- They cite their sources
- They never plagiarize or try to copy other people's work
- They have good introduction sentences at the start of each intro paragraph
- They're versatile writers, meaning they can follow more than one structure