Turn a sketch into a space without losing the plan.

01 / Protect the source

Treat the drawing as geometry, not inspiration.

The first job is to decide what the image model is allowed to change.

A plan, elevation, or interior sketch already carries decisions: room proportions, openings, circulation, and camera angle. If you merely ask for “a beautiful modern interior,” those decisions can get traded away for a convincing picture.

Name the invariants explicitly. Keep the wall positions, openings, proportions, furniture zones, and point of view. Then describe the finish you do want to explore: material, daylight, color temperature, planting, or styling.

• Lock: plan, openings, proportions, camera.
• Explore: materials, light, furnishing, atmosphere.

02 / Make the change legible

Hold the view. Change one family at a time.

A stable comparison tells you whether the design changed—or just the image.

Use the same source and camera when exploring alternatives. Start with the material palette; in another pass, change the lighting; in another, test styling. Smaller edits make it easier to spot when the geometry drifts.

If a window migrates or a corridor closes, reject the image even if it is gorgeous. Reassert the exact feature that drifted, reduce the amount of change requested, and generate another pass. A good render is a design decision only when the plan still makes sense.

03 / Review like a designer

Judge fidelity before atmosphere.

A two-part review stops a cinematic image from winning by default.

First compare structure: count the openings, trace the circulation, and check the proportions against the source. Then review atmosphere: does the light help explain the volume, are the materials coherent, and does the furniture support the intended use?

Keep the source beside the render, not buried in a prompt history. When you share the result, label it as a visualization concept rather than a construction document; the image is a design communication aid, not a substitute for measured drawings.