Nano Banana Pro X Header Image Generation Prompt (21:6 Aspect Ratio)

Prompt

# ===== USER CONTROLS ===== title_text: "{argument name="display text" default="<<YOUR_TEXT>>"}" title_style_preset: "{argument name="logo design preset" default="cool"}"  # cool, cute, cool_cute, luxury, pop, cyber, minimal, retro, kawaii face_zoom: "{argument name="zoom on/off" default="off"}"            # off, on  subject: >   Create a 21:6 wide banner using the provided reference image content.   The primary face must be centered inside an invisible safe zone (not drawn),   and a title logo (derived from title_text + title_style_preset) must be placed inside the same safe zone.  composition: >   Aspect ratio 21:6.   Invisible safe zone (DO NOT draw it):   - Left margin: 15% of width   - Right margin: 15% of width   - Top margin: 16% of height   - Bottom margin: 16% of height   Keep the entire face AND the entire title logo fully inside this safe zone.   Background may extend to the edges.  action: >   Place the reference image content with maximum fidelity.   Auto-crop/scale/reposition to fit a 21:6 banner with no stretching.   Detect the primary face (if multiple faces, pick the largest/most prominent).   Center the primary face within the safe zone both horizontally and vertically.   Never crop off the face/eyes; keep the full face comfortably inside the safe zone (not near edges).    Face zoom behavior:   - If face_zoom is OFF: keep the original framing as much as possible while still centering the face in the safe zone.   - If face_zoom is ON: zoom/crop to a bust-up portrait centered on the face     (head and shoulders visible; include upper chest; do no