From mastering prompts to choosing the right model — discover 10 essential AI image generation tips every designer needs to know in 2026 to level up their creative workflow.
1. Always Start With a Clear Subject
Before you write a single prompt, know exactly what you're generating. "A beautiful landscape" is too vague — instead, try "A misty mountain valley at sunrise, pine trees silhouetted against orange sky, distant waterfall, cinematic lighting." Specific subjects give AI image models something concrete to latch onto, especially models like Seedream 4 and Nano Banana 2 that excel with detailed descriptions.
2. Master the Art of Lighting Descriptions
Lighting is the single most underrated prompt ingredient. Designers who nail lighting get professional results every time. Use terms like "golden hour," "soft diffused light," "dramatic side lighting," "studio softbox," or "neon glow at night." The model interprets these as real lighting physics, producing images with depth and mood instead of flat, generic results.
3. Name Your Camera and Lens
Here's a pro tip many beginners miss: reference specific camera gear in your prompt. Writing "shot on Canon EOS R5 with 85mm f/1.4 lens, shallow depth of field" tells the model exactly what look you want. Different focal lengths produce different perspectives — wide-angle for landscapes, telephoto for portraits, macro for details. AI image models trained on real photographs understand these cues.
4. Use Negative Prompts Like a Pro
Negative prompts are your quality filter. Tell the model what you don't want. In Cooly Studio, add negative terms like "blurry, low quality, distorted hands, extra fingers, watermarks, text, signature, oversaturated, cartoonish" to eliminate common AI artifacts. For realistic photography, add "3D render, illustration, painting, CGI" to keep things grounded. For stylized art, remove those terms. Negative prompts cost nothing extra but dramatically improve output quality.
5. Match the Right Model to the Job
Not all AI image models are created equal. Seedream 4 delivers stunning photorealism and excellent prompt adherence — perfect for product shots and brand assets. Nano Banana 2 excels at style variety and handles complex scenes well — great for editorial and creative concepts. Flux Schnell is your speed pick for rapid iteration. Use Cooly Studio to switch between models in one interface without re-entering prompts, and compare results side by side.
6. Use Reference Images for Brand Consistency
If you're generating multiple images for a campaign, reference images are essential. Upload a sample image that captures the lighting, color palette, or composition you want. Models like Seedream 4 and Nano Banana 2 support image-to-image workflows that preserve the visual DNA across generations. This is how agencies maintain brand consistency — the same product shot style across 50 variations, or the same model face across different outfits and settings.
7. Iterate, Don't Regenerate
The biggest waste of credits is clicking "generate" 20 times hoping for the perfect result. Instead, generate 3-4 variations, pick the closest one, then refine with more specific prompts. Tweak one variable at a time — change the lighting, then the composition, then the color palette. Use Cooly Studio's variation feature to build on a near-perfect result rather than starting from scratch. This approach cuts your iterations by 60% and produces better final images.
8. Add Style References and Artists
Want a specific aesthetic? Reference known styles and artists. "Cinematic style inspired by Denis Villeneuve, atmospheric fog, muted teal and orange palette" or "Studio Ghibli inspired, soft pastel colors, whimsical, warm lighting." AI image models understand these references from their training data. For commercial work, avoid directly copying a living artist's distinctive style, but referencing art movements like "impressionist," "art deco," "minimalist poster design," or "vintage travel poster" is fair game and produces stunning results.
9. Control Composition With Framing Keywords
Most designers don't realize they can direct the camera placement through simple keywords. Use "low angle shot" to make subjects look powerful, "bird's eye view" for overhead patterns, "extreme close-up" for details, "wide establishing shot" for landscapes, or "Dutch angle" for tension. These compositional cues work across Seedream 4, Nano Banana 2, and Flux Schnell. Combine them with your lighting and lens choices for full directorial control.
10. Experiment With Aspect Ratios and Sizes
Don't default to square every time. The aspect ratio dramatically changes what the model generates. 16:9 produces cinematic widescreen compositions. 4:3 is classic photography. 9:16 works for mobile-first social media. 3:2 suits print photography. On Cooly Studio, you can choose from multiple aspect ratios and resolution settings. Switching ratios forces the model to recompose the entire scene, often producing surprisingly creative alternatives to your base prompt.
Frequently Asked Questions
Q: How long should my AI image prompt be? A: Quality trumps length. A precise 30-50 word prompt with specific lighting, camera, and style details outperforms a 200-word rambling description. Focus on clarity over quantity.
Q: Which AI image model is best for product photography? A: Seedream 4 is currently the best choice for product photography on Cooly Studio. It delivers exceptional photorealism, handles reflective surfaces well, and respects detailed lighting instructions — perfect for commercial product shots.
Q: Can I use AI-generated images for commercial projects? A: Yes, images generated through Cooly Studio can be used for commercial purposes. Always check the specific terms of each model — Seedream 4 and Nano Banana 2 both permit commercial use.
Q: What's the fastest way to generate consistent brand images? A: Use reference images (image-to-image) combined with a saved prompt template. Upload one approved brand image, then generate variations while keeping the same lighting, color palette, and composition keywords.
Q: Why do my AI images sometimes have weird hands or fingers? A: Hands remain one of the hardest things for AI image models to render correctly. Use negative prompts like "bad hands, extra fingers, deformed hands" to reduce this. If results are still off, try generating at a higher resolution or add "detailed hands" to your positive prompt.
Q: Should I use the same prompt across different models? A: No. Each model responds differently to the same prompt. Seedream 4 prefers detailed technical descriptions, Nano Banana 2 handles creative and abstract prompts better, and Flux Schnell works best with concise direct prompts. Adapt your prompt style to the model.
Q: How do I remove AI artifacts and noise from generated images? A: Use a combination of negative prompts (targeting "oversaturated, noise, grain, artifacts") and Cooly Studio's upscaling tools. If an image has visible noise, regenerate at a higher resolution setting or add "clean, sharp, high detail" to the prompt.
Q: What aspect ratio should I use for social media posts? A: 1:1 for Instagram feed, 9:16 for Instagram Stories and TikTok, 16:9 for YouTube thumbnails, and 4:5 for Pinterest. Cooly Studio supports all common ratios — match your output to your platform for the best visual impact.