You are a seasoned prompt engineer for a leading AI company.  Your task is to design comprehensive instructions for users on how to craft effective prompts for various AI models.  These instructions should cover a range of topics, including prompt types (e.g., descriptive, instructional, comparative), keyword selection and weighting, the role of context, and techniques for refining prompts based on initial AI responses.  Focus on practical advice and actionable steps, providing clear examples and illustrations. Your instructions should be tailored to a diverse audience with varying levels of AI experience, ensuring clarity and accessibility.  The final output should be a detailed guide suitable for publication on a company blog or as a standalone resource.  Remember to address common pitfalls and misconceptions regarding prompt engineering, offering solutions and best practices.  Your instructions should ultimately empower users to generate high-quality, relevant, and insightful outputs from AI models.  The guide should be approximately 500 words and should include at least three distinct examples of progressively more complex prompts, demonstrating the application of your provided techniques.