Curtain vs Lighting vs Rug: My Beginner AI Test (What Changed the Room Most?)

Cover: Curtain vs Lighting vs Rug ( one-variable test)

In my previous post, I set up a structure-locked baseline so I could run a fair comparison.

This time, I tested one change at a time:
I re-ran these on Discord until the results finally behaved.
  • Curtain-only: warm oatmeal side curtains
  • Lighting-only: layered lighting (floor lamp + table lamp)
  • Rug-only: ivory microfiber rug
Note: Midjourney can introduce small scene differences. I'm focusing on the practical qustion: which single change gives the biggest "bright + clean + cozy" upgrade with minimal effort?

Baseline (Before)

baseline-before-midjourney tests
Baseline reference image used for one-variable Midjourney tests (no changes).

Test 1 — Curtain-only (Warm Oatmeal Linen Side Curtains)

I couldn’t get consistent results in the Midjourney editor, so I switched to Discord and retried the prompt there.

My goal was the most stable result: replace only the side curtains with a warm oatmeal tone, while keeping everything else unchanged.
Exact prompt used (Curtain-only)

Prompt:

“replace ONLY the side curtains with warm oatmeal linen curtains, same curtain length and tieback position, keep the sheer curtain, keep window size and outdoor view unchanged, do not change anything else”
One small issue: a lamp edge appeared on the left wall, so I removed it using Vary (Region).
Exact prompt used (Vary Region clean-up)

Prompt:

“remove the lamp, reconstruct the wall naturally, match original lighting, no other changes”

Curtain Before/After collage

Curtain-only: warm oatmeal curtains (same layout preserved)
AI curtain-only test: warm oatmeal curtains, same room layout and window.

Quick take: Softer daylight + warmer mood without looking overly “styled.”

Test 2 — Lighting-only (Layered Warm-Neutral Lighting)

For lighting, I tested layered light: one slim floor lamp + one small table lamp, with a warm-neutral tone and gentle bounce light.

Exact prompt used (Lighting-only)

Prompt:

“add ONLY layered lighting: one slim floor lamp beside the sofa and one small table lamp, warm-neutral LED, gentle bounce light on the wall, keep daylight unchanged, no other changes”
Lighting Before/After collage

Lighting-only: layered warm-neutral lamps (floor + table), same framing for a fair comparison.
AI lighting-only test: layered warm-neutral lamps (floor + table), same layout preserved.

Quick take: The cleanest “finished” look—lighting controls shadow and contrast more than I expected.

Test 3 — Rug-only (Ivory Microfiber Rug)

For the rug test, I wanted a soft, clean base: an ivory microfiber rug (low pile), with everything else unchanged.

But Midjourney kept adding extra furniture (especially a sofa), so I had to strengthen the prompt with ban words.

Exact prompt used (Rug-only)

Prompt:

“add ONLY a plain ivory microfiber rug (low pile) on the floor, keep the room empty as the reference, do not add any furniture or objects, no other changes”
Ban words added (to stop extra furniture)

Prompt add-on:

“no sofa, no couch, no table, no lamp, no plants, no decor”
Rug Before/After collage

Rug-only: ivory microfiber rug (soft + clean). Minor AI styling may appear, but the rug effect is the focus.
AI rug-only test: ivory microfiber rug (soft + clean), same room baseline.

Quick take: The fastest “cozy upgrade.” It instantly makes the room feel softer and less empty.

Scorecard (1–5)

Higher = better.


Effort/Cost: higher = easier and cheaper.
Curtains vs Lighting vs Rug score table (brightness, clean look, realism, effort)
Text-first finale: score summary table.
Quick read: #1 Curtains (background), #2 Lighting (face), #3 Rug (balance) - best stack order: curtains→ lighting → rug.

My takeaway (one sentence)

For a modern bright studio vibe: warm oatmeal curtains + layered warm-neutral lighting + an ivory microfiber rug.

Images used in this post

  • Baseline (Before)
  • Curtain Before/After collage
  • Lighting Before/After collage
  • Rug Before/After collage
Previous episode: Setting Up a Structure-Locked Baseline in Midjourney (Before the Curtain vs Lighting vs Rug Test)
Next episode: Clean, Bright, Minimal: A Modern White Kitchen & Bathroom Upgrade (Layout Locked, AI Test)

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