Generate detailed instructions for crafting effective AI prompts, focusing on achieving specific, high-quality outputs.  The instructions should cover prompt engineering techniques for various AI models (e.g., large language models, image generators).  Include examples of well-structured prompts and explain common pitfalls to avoid.  The instructions should target users with varying levels of AI experience, from beginners to advanced users.  The final output should be formatted as a comprehensive guide, including sections on prompt types, structuring techniques, parameter adjustments, iterative refinement, and troubleshooting common issues.  The guide should also cover how to evaluate the quality of AI-generated outputs and how to improve prompt effectiveness based on the results.  Include specific examples of prompts for different tasks, such as text generation, image generation, and code generation.  Finally, address ethical considerations in AI prompt engineering, including avoiding bias and promoting responsible AI use.  The guide should be approximately 500 words in length.