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January 8, 20245 min read

5 Common Prompt Engineering Mistakes and How to Fix Them

Avoid these common pitfalls that can lead to poor AI responses and learn how to craft prompts that consistently deliver high-quality results.

By PromptlyClear Team

Even experienced users make these common mistakes when crafting AI prompts. Recognizing and fixing them can dramatically improve your results.

Mistake #1: Being Too Vague

The Problem

Asking "Tell me about AI" or "Write code for my app" gives the AI no direction, resulting in generic, unhelpful responses.

The Fix

Be specific about what you want:

  • What aspect of AI? (history, applications, technical details)
  • Who is the audience? (beginners, experts, business leaders)
  • What format? (essay, bullet points, technical documentation)
  • How long should it be? (200 words, 5 paragraphs, 2 pages)

Better prompt: "Write a 500-word explanation of how transformer models work in AI, targeting software developers with basic machine learning knowledge. Use analogies to make complex concepts accessible."

Mistake #2: Forgetting to Define the Audience

The Problem

Without knowing who the content is for, the AI can't adjust its language, depth, or examples appropriately.

The Fix

Always specify your target audience:

  • "Explain this to a 10-year-old"
  • "Write for experienced developers"
  • "Target non-technical business executives"
  • "Suitable for beginners with no background knowledge"

Mistake #3: Not Providing Examples

The Problem

When you have a specific format or style in mind but don't show examples, the AI often misses the mark.

The Fix

Include examples of what you want:

"Generate product descriptions in this format:

Example: Premium Wireless Headphones Experience pure sound Features: Noise cancellation, 30-hour battery, premium materials Price: $299

Now create similar descriptions for..."

Mistake #4: Ignoring Constraints and Requirements

The Problem

Not specifying constraints leads to output that doesn't fit your needs—too long, wrong format, missing key elements.

The Fix

Define all constraints upfront:

  • Length limits (word count, character count)
  • Required sections or elements
  • Tone and style (formal, casual, technical)
  • Format (markdown, HTML, plain text)
  • Technical constraints (compatible with X, uses Y framework)

Mistake #5: Asking Multiple Unrelated Questions at Once

The Problem

Cramming multiple unrelated requests into one prompt leads to incomplete answers or the AI focusing on just one part.

The Fix

Either:

  1. Ask questions sequentially in separate prompts
  2. If related, clearly number and separate each part
  3. Specify you want comprehensive answers to each point

Instead of: "Explain TypeScript and also how does React work and what's the best way to deploy a Node.js app?"

Use: "I have three related questions about modern web development. Please provide a comprehensive answer to each:

  1. What are the key features of TypeScript that make it valuable for large projects?
  2. How does React's component lifecycle work?
  3. What are the best practices for deploying Node.js applications to production?

Please address each question thoroughly with examples."

Bonus Tip: Iterate and Refine

Don't expect perfection on the first try. Use follow-up prompts to refine:

  • "Make this more concise"
  • "Add more technical depth"
  • "Rewrite this for a non-technical audience"
  • "Include code examples for each point"

Conclusion

Avoiding these common mistakes will immediately improve your AI interactions. The key is being specific, providing context, and clearly defining your requirements. Remember: the AI can only work with the information you provide.

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    5 Common Prompt Engineering Mistakes and How to Fix Them | PromptlyClear Blog