Series drift is usually blamed on the model, the way a misbound book is blamed on the paper. Read the draft instead. The character was described from memory at every chapter, and memory edits as it works: “long black hair” in the opening chapter becomes “dark flowing hair” three chapters later, and the reader watches a stranger quietly take over the volume. The repair is clerical, not technical. Write the muse down once, on a card you paste rather than retype.
Five fixed entries, always in order
A working chapter card holds five things. Age — a number, always 25 or over. Hair — colour, length and one habitual style. Build — two or three words, no more. Face — one or two details that endure every crop. Signature — the mole, the ring, the mark that survives even a tight frame. Everything else belongs to the working line: outfit, setting, hour, light, pose. Working lines are meant to change at every layer. Card entries are not.
Two habits keep the card healthy across a long volume. Entries are stated plainly and positively — “long silver-ash hair in two low loose braids tied with mint silk ribbons” survives generation, while “beautiful hair” is reinterpreted at every attempt. And the card is versioned. When the muse is deliberately changed — a new cut, a new signature — the new text is saved as version two with a date, so an old set can still be remade exactly as it was first drafted.
Working from the card
Production then becomes a calm routine. Pair the card with working lines that share one setting and one light, and generate the set at the standard model’s 6-credit price. Keep the best third. Spend on repairs, transfers and upscales only after the cull. When a frame returns off character, the cause is almost always visible in the draft: a working line contradicted a card entry, or an entry was too vague to hold. Both are fixed on paper, at the desk — not by hunting through settings in the middle of a chapter.
What a card cannot do
It cannot hold a muse who was never decided. If the entries are adjectives — lovely, striking, perfect — no system in any manual will keep her. Decide her on paper first. The chapter card is not where the imagination happens; it is where the imagination is kept, layer after layer.