← Lab / Guid{6 min read

Prompt systems that keep AI imagery on-brand.

By Juan Vargas · 30 July 2026 · Guide

Polished metal discs suspended in space

The short answer

  • Image models are brilliant at variety and terrible at consistency. A brand needs the opposite.
  • A prompt system turns your art direction into reusable building blocks.
  • Generate wide, then curate hard. A designer always makes the final call.

Why one-off prompts fail

Type a clever prompt into an image model and you get a striking picture. Type it again next week and you get a different light, a different lens and a different mood. Across a campaign, that inconsistency reads as cheap.

Build the system

  • A style block. Lens, light, palette, texture and composition, written once and reused in every prompt.
  • Subject templates. Product, people, place and abstract, each with fixed framing rules.
  • Negative rules. What the brand never shows: certain colours, cliches, stock poses.
  • Reference images. A small, curated set the model is guided by, so the look holds across tools.

“Generate wide, curate hard.”

The production loop

We generate in batches, shortlist the strongest 10%, then retouch and colour-match them in Photoshop so every image sits in the same world. Tools change monthly, so the system lives in a shared document, not inside one app.

Where people stay in charge

AI makes exploring fast. Taste is still human. The art director chooses, refines and says no, and that is what keeps a feed looking like one brand instead of a hundred prompts.

Juan VargasJuan VargasDesign Lead, Secret AgencyTalk to Juan
Keep reading
Identical columns with one twisted

Why every brand sounds the same

Essay

Curved fins rising in a stepped sequence

Outcome pricing for small teams

Essay

Start hereBrisbane · Sydney · Coffs Harbour · Gold Coast · Melbourne

Does AI recommend you?

Start with a free AI visibility check. We’ll show you where you stand before you spend anything.

Talk to Secret
← Lab / Guide6 min read

Prompt systems that keep AI imagery on-brand.

By Juan Vargas · 30 July 2026 · Guide

Polished metal discs suspended in space

The short answer

  • Image models are brilliant at variety and terrible at consistency. A brand needs the opposite.
  • A prompt system turns your art direction into reusable building blocks.
  • Generate wide, then curate hard. A designer always makes the final call.

Why one-off prompts fail

Type a clever prompt into an image model and you get a striking picture. Type it again next week and you get a different light, a different lens and a different mood. Across a campaign, that inconsistency reads as cheap.

Build the system

  • A style block. Lens, light, palette, texture and composition, written once and reused in every prompt.
  • Subject templates. Product, people, place and abstract, each with fixed framing rules.
  • Negative rules. What the brand never shows: certain colours, cliches, stock poses.
  • Reference images. A small, curated set the model is guided by, so the look holds across tools.

“Generate wide, curate hard.”

The production loop

We generate in batches, shortlist the strongest 10%, then retouch and colour-match them in Photoshop so every image sits in the same world. Tools change monthly, so the system lives in a shared document, not inside one app.

Where people stay in charge

AI makes exploring fast. Taste is still human. The art director chooses, refines and says no, and that is what keeps a feed looking like one brand instead of a hundred prompts.

Juan VargasJuan VargasDesign Lead, Secret AgencyTalk to Juan
Keep reading
Identical columns with one twisted

Why every brand sounds the same

Essay

Curved fins rising in a stepped sequence

Outcome pricing for small teams

Essay

Start hereBrisbane · Sydney · Coffs Harbour · Gold Coast · Melbourne

Does AI recommend you?

Start with a free AI visibility check. We’ll show you where you stand before you spend anything.

Talk to Secret