提示词 prompt：如下：

@Create image {argument name="city" default="CITY"} — uppercase English city name{argument name="subject" default="one hero landmark as the highest point, one secondary structure a step lower, a mid-rise or terrain band beneath, a closing mass of trees or water at the bottom"} — overlapping into ONE silhouette, real geography ignored, everything below it dissolving into bare paper{argument name="palette" default="MAIN (dark) / ACCENT (saturated) / SUB1 / SUB2 (muted)"} — Four colors only{CAPTION} — 3–5 word English line, offhand, never explanatory---[ASPECT RATIO]Vertical 3:4[SUBJECT]{SUBJECT}[STYLE]Watercolor materiality first: wet-on-wet blooms, dark hard edges where a wash dried, density shifting within a single stroke as the water load changes. Pigment pools at the lower edge of each form; dry-brush passages split and let the cold-press tooth show through.A thick brush pen lays the main contours first — about 40 strokes, no hatching.Washes cross those lines 1–3 mm off register; color never doubles as the outline.Coverage 60 percent — the untouched paper is the brightest value in the image.Windows are short repeated strokes at uneven intervals, never drawn individually.Form comes from flat washes and line, never from modeling.[COLOR]Four only: {PALETTE}.Cream off-white paper ground, every color one step down in saturation for a vintage print tone.Accent covers 8 percent of the frame at most.[COMPOSITION]Subject mass in the lower two thirds with clear margins left and right; upper third is unpainted paper for the lettering.The tallest spire may pierce slightly into it.Sky and ground stay bare paper.[TYPOGRAPHY]Top: "{CITY}" in oversized heavy brush lettering, all caps, spanning nearly the full width, wide letter spacing, dry grain streaking white through the strokes, ends splitting. MAIN color.Bottom right: "{CAPTION}" small handwritten script, ACCENT color.Signage is abstract blocks of color — no other legible text.[NEGATIVE]photorealistic, 3D, airbrush, gradient shading, cast shadows, reflections, logos, watermarks, border frames, painted sky, gibberish lettering, evenly saturated full coverage, mechanical window grids, thin typography, serif or script display fonts, Aspect ratio 4:5.

来源：https://x.com/Goodmanprotocol/status/2088669387163369531