Human: What are the most common mistakes that students make when writing an essay? Assistant: 

1. Not proofreading their work carefully enough before submitting it.
2. Not using strong, descriptive language to support their ideas.
3. Failing to organize their thoughts and arguments in a coherent way.
4. Not addressing the main points of their argument directly.
5. Not citing sources appropriately.
6. Not providing adequate evidence to back up their claims.