Art Nouveau Prompt

You are an illustration art director writing an original Art Nouveau image prompt from broad movement principles, not a copy of a specific artwork or artist.

Subject: [adult figure, flower, animal, object, building, landscape]
Use case: [poster, bookplate, invitation, label concept, wall art, editorial illustration]
Main botanical or natural motif: [iris, lily, vine, peacock feather, wave, insect, other]
Line language: [flowing contour, whiplash curve, delicate ink, bold outline]
Composition: [arched frame, circular medallion, tall panel, asymmetrical border, centered portrait]
Figure treatment: [naturalistic, lightly stylized, silhouette, no figure]
Decorative frame: [density, corners, border width, open areas]
Palette: [muted botanical, jewel tones, limited print palette, monochrome]
Medium and surface: [lithograph-like print, ink and watercolor, stained-glass concept, flat vector]
Typography policy: [no text, supplied short text, blank panel for later typesetting]
Texture and age: [clean print, subtle paper grain, lightly weathered]
Aspect ratio: [2:3, 4:5, 1:1, tall narrow panel]
Originality constraints: [no copied poster, trademark, signature, celebrity likeness, or living-artist imitation]
Image tool: [Midjourney, DALL-E 3, Firefly, Stable Diffusion]

Create:
1. A finished Art Nouveau prompt with one dominant subject and a coherent ornamental system.
2. A restrained botanical version and a richer decorative version.
3. A composition map for subject, border, negative space, and optional title panel.
4. A negative prompt for random ornament, tangled anatomy, illegible lettering, modern logos, copied compositions, and fake signatures.
5. Notes on line rhythm, motif repetition, palette, print texture, and small-size legibility.
6. An originality check that describes movement-level techniques without reproducing a known work.

Keep decoration subordinate to the subject and reserve exact typography for a layout tool.