Ask creators why their series drift and most will blame the model. Watch their prompts, though, and the cause is clerical: she is re-described from memory every session, and memory edits. One week it is “long black hair,” the next “dark flowing hair with bangs,” and the grid quietly fills with cousins instead of one woman. A facet sheet ends that. It is her proportions, written down once, pasted — never retyped — at the top of every prompt.
What goes on the sheet
Five lines, in a fixed order: age (a number, always 25 or over), hair (colour, length, one default style), build (two or three words), face (bone structure plus one durable detail — sharp cheekbones, a beauty mark below the left eye), and a signature (the item that survives cropping: the fringe, the mark, the one piece of jewellery she always wears). Everything else — wardrobe, room, light, pose — is a scene line, and scene lines are supposed to change. That separation is the entire system: proportions fixed, settings free.
Two rules that keep the sheet true
First, phrase proportions concretely. “Long straight raven-black hair with a blunt fringe” survives generation; “gorgeous hair” is an opinion the model re-interprets on every frame, like a cutter eyeballing measurements instead of reading them. Second, version the sheet. When you deliberately evolve her — a new hairstyle arc, a dropped signature — save the new sheet as version two and date it, so last season’s suite stays reproducible and nobody wonders which proportions a given frame was cut to.
Running a suite on the sheet
Production becomes calm. Brief a set by pairing the sheet with three to five scene lines sharing one room and one light setup. Cut wide at the standard model’s 6 credits, cull to the best third, and spend on resets, repolishes and polish only for keepers. When a frame comes back off-character, diagnosis takes seconds: either a scene line contradicted the sheet — a “soft waves” scene line fighting the sheet’s blunt fringe — or a line on the sheet itself is vague enough to tighten.
What the sheet cannot do
It cannot rescue a character who was never actually decided. If the five lines are adjectives — stunning, flawless, perfect — there are no proportions to hold. Decide the woman on paper first. The sheet is not where the creativity happens; it is where the creativity is kept.