The Repair Shop: How to Fix AI Hands, Eyes & Glitches (Inpainting Guide)

You have generated the perfect image. The lighting is cinematic, the composition is heroic, and the colors are vibrant. But then you zoom in. The character has seven fingers. The eyes are looking in two different directions. There is a third arm growing out of a shoulder.

This is the "Uncanny Valley" of AI. But you don't have to delete the image and start over. You can repair it. This guide is your crash course in **Inpainting** and **Restoration**. We will move beyond simple prompting and teach you the surgical techniques used by professionals to fix hands, restore eyes, and remove artifacts, turning a "failed" generation into a flawless masterpiece.

1. Why AI Fails at Anatomy

AI models (like Stable Diffusion or Midjourney) do not understand biology. They don't know that a hand must have five fingers. They only know that hands are "bunches of flesh cylinders" that usually appear near arms. When the AI gets confused by complex poses, it just keeps adding fingers until it "looks" right to its mathematical logic.

Understanding this helps us fix it: The AI needs context and guidance to stop hallucinating extra limbs.

2. Prevention: The "Negative" Shield

The best fix is to not make the mistake in the first place. Before you generate, you must use a heavy Negative Prompt stack specifically for anatomy.

Negative Prompt Stack:
"bad anatomy, deformed, disfigured, mutated hands, extra fingers, missing fingers, fused fingers, floating limbs, disconnected limbs, mutation, ugly, disgusting, amputation, extra legs, malformed limbs"

3. The Art of Inpainting (The Surgical Fix)

Inpainting is the process of masking (highlighting) a specific part of an image and asking the AI to regenerate only that part, while leaving the rest of the image untouched.

The Golden Rule of Inpainting

When you inpaint, you must change your prompt. If your original prompt was "A beautiful woman in a garden," and you are fixing her hand, change the prompt to just "A hand."

If you keep the original prompt, the AI might try to squeeze a tiny "woman in a garden" inside her hand. Focus the prompt on the specific part you are fixing.

4. Specific Guide: Fixing Broken Hands

Hands are the hardest to fix. Here is the workflow:

1. Mask the Area: Paint over the bad hand. Be generous; include the wrist so the AI knows where the hand connects.
2. The Prompt: Use a descriptive prompt for the hand's action. Don't just say "Hand." Say "Hand holding a coffee cup" or "Clenched fist."
3. Denoising Strength: Set this to 0.5 - 0.6. You want the AI to change the shape significantly (because the original shape is wrong), but still match the lighting.

Inpaint Prompt for Hands:
"Perfectly detailed hand, five fingers, holding a sword hilt, knuckles, realistic skin texture"
Negative: "extra fingers, mutated, blurry, claw"

5. Specific Guide: Fixing Dead Eyes

At a distance, AI renders eyes as blurry dots. This destroys the emotional connection. To fix this, we use a "Face Restore" or specific inpainting.

1. Mask the Eyes: Highlight both eyes and the bridge of the nose.
2. The Prompt: Focus on the iris and reflection.
3. Resolution: Ensure you are generating at a high enough resolution. Eyes need pixels to look real.

Inpaint Prompt for Eyes:
"Detailed eyes, symmetrical circular iris, sharp focus, light reflection in eye, eyelashes, intense gaze"
Negative: "asymmetrical, cross-eyed, blurry, fused eyelashes"

6. Frequently Asked Questions

Why does Inpainting sometimes look like a collage?

This happens when the "Denoising Strength" is too high (making the new part look too different) or the lighting prompt doesn't match. Ensure you include lighting keywords (e.g., "Sunset lighting") in your inpaint prompt so the new hand matches the old body.

Can I fix blurry faces without Inpainting?

Yes. Use our Detail Enhancer tool. It uses a "Face Restore" algorithm (like GFPGAN or CodeFormer) that automatically detects faces and redraws them with high precision, no manual masking required.

How do I hide the hands completely?

If you can't fix the hands, hide them. Add keywords like "hands in pockets" or "hands behind back" to your initial prompt. It’s a cheat, but it works.

7. Tools You Can Use

Don't struggle with broken pixels. Use these tools to repair your art:

• Detail Enhancer: The quickest way to fix blurry faces and eyes automatically.
• Negative Helper: Use this before you generate to prevent bad anatomy in the first place.
• Photorealistic Generator: Tuned to prioritize anatomical correctness over artistic style.

Conclusion

Great AI art isn't just about the first click; it's about the polish. By mastering Inpainting and understanding why anatomy fails, you stop relying on luck. You gain the power to save your best concepts from technical errors, ensuring every image you publish is flawless, professional, and impactful.