Guide: How to Make Your Renders Hyper-Realistic with Stable Diffusion

1. Why You Need This

• If your render looks good but not truly realistic, you can enhance it with natural vegetation, lifelike people, and small details that bring it alive.

• These improvements create the wow effect during client presentations.

• Almost every design studio, architecture firm, and creative agency now uses Stable Diffusion to enhance their work.

2. Installing Stable Diffusion (Forge)

1. Open the step-by-step guide (link in video description).

2. Go to GitHub → find the section Installing Forge.

3. For Windows → download the .7zip file.

4. Unzip it → a new folder with Forge files will appear.

5. Run update.bat to make sure you have the latest version.

6. Launch run.bat → Stable Diffusion will open in your browser.

7. (Pro tip) Right-click → Create shortcut → drag it to your desktop for quick access.

3. Downloading Models

• Navigate to webui > models > stable-diffusion.

• Download models from Civit AI or Hugging Face.

• Place the file into this folder → it will appear in the checkpoint list.

• For ArchViz, the CyberRealistic model works great.

4. Interface & Settings

• Main modes: image-to-image and inpaint.

• Always use a negative prompt for cleaner results (you can generate one with ChatGPT).

• Recommended generation settings:

  • 30–40 steps

  • Proper width & height (depending on your render)

  • Use external AI upscalers for higher resolution images

5. Example: Adding People

1. Upload your render into inpaint.

2. Select the area (e.g., where you want a person).

3. In the prompt: type “man” (or another subject).
   In the negative prompt: use a pre-made high-quality list.
   
   Naked, nude, bad anatomy, bad hands, three hands, three legs, bad arms, missing legs, missing arms, poorly drawn face, poorly rendered hands, bad face, fused face, cloned face, worst face, three crus, extra crus, fused crus, worst feet, three feet, fused feet, fused thigh, three thigh, extra thigh, worst thigh, missing fingers, extra fingers, ugly fingers, long fingers, bad composition, horn, extra eyes, huge eyes, 2girl, amputation, disconnected limbs, cartoon, cg, 3d, unreal, animate, cgi, render, artwork, illustration, 3d render, cinema 4d, artstation, octane render, mutated body parts, painting, oil painting, 2d, sketch, bad photography, bad photo, deviant art, aberrations, abstract, anime, black and white, collapsed, conjoined, creative, drawing, extra windows, harsh lighting, jpeg artifacts, low saturation, monochrome, multiple levels, overexposed, oversaturated, photoshop, rotten, surreal, twisted, UI, underexposed, unnatural, unreal engine, unrealistic, video game, deformed body features, poorly drawn face, bad face, fused face, ugly face, worst face, asymmetrical, unrealistic skin texture, bad proportions, out of frame, poorly drawn hands, cloned face, double face, extra digits, extra arms, extra hands, fused fingers, malformed limbs, mutated hands, poorly drawn hands, extra fingers, missing hands, bad hands, three hands, fused hands, too many fingers, missing fingers, deformed hands, bad proportions, asymmetric ears, broken wrist, additional limbs, asymmetric, collapsed eyeshadow, altered appendages, broken finger, bad anatomy, elongated throat, double face, conjoined, bad face, broken hand, out of frame, disconnected limb, 3d, bad ears, amputee, cross-eyed, disfigured, cartoon, bad eyes, cloned face, combined appendages, broken leg, copied visage, absent limbs, childish, cropped head, cloned head, desiccated, duplicated features, dismembered, disproportionate, cripple, worst quality, low quality, lowres, blurry, pixelated, distorted, jpeg artifacts, compression artifacts, bad art, ugly, cartoonish, blurry, out of focus, watermark, text, signature, logo, noisy, grainy, overexposed, oversaturated, monochrome, boring background, poorly drawn, unrealistic lighting, low contrast, unclear details, simple background
   
   

4. Settings:

   • Sampling steps: 40

   • Denoising strength: 0.4–0.7

   • High resolution for best realism

5. With each iteration, the result becomes more photorealistic.

6. Example: Vegetation & Small Details

• Use 4K images for the best enhancements.

• Small masked areas → sharp results.

• Large masked areas → may look slightly blurry.

• Before/after comparison: grass, asphalt, people, and environment become much more natural with Stable Diffusion.

7. Learn More

Check out Plemya School for a full all-in-one ArchViz course:

• Includes AI tools, animation, business skills, and practical assignments.

• Pre-recorded lessons + personal support + weekly calls.

• Lifetime access — learn at your own pace.