Simple prompts work best. Work iteratively.
Prompt gurus say JSON prompts or long-winded prompts work best. They don’t.
Shaun McCallum
February 23, 2026Keep your prompts simple.
Fenestra supports a wide range of image, video, and spatial AI models, and they all have their own quirks. But more often than not, they do not respond well to long, overly verbose prompts. I tell everyone the same thing: keep your prompts simple.
“Add this.”
“Remove that.”
“Change the weather to…”
“Try an X style.”
The reason is straightforward. Your input image should carry most of the context for the model.
Change the weather to:
In architecture and interior design, the image is usually the source of truth. It might be a sketch, a 3D model, or a plan drawing. In most cases, you do not want the structure to change. You just want to move from 2D to 3D, test new materials, explore styles, or adjust environmental conditions.
Try a watercolor style:
Short prompts respect the geometry. Long prompts often fight it. This is how you get the best out of modern AI models.
Replace the concrete with:
That said, the real unlock is iteration.
AI is a design tool, not a magic wand. The teams getting the most value are not chasing the perfect one-shot prompt. They are running fast cycles, exploring options, and steering the output step by step.
You should assume you are working with rapid iterations and early-stage ideas, not expecting one click of the render button to magically solve everything.
What it will do is get you much closer to the finished result in seconds instead of hours, and without waiting days for external renders.
Keep your prompts simple. Iterate. Make it part of your design process.
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