Here's a possible prompt structure:

• Portrat type: studio portrait, candid portrait, selfie, streetstyle, glamour, fashion, boudoir, fine art, cinematic still, ...

or

• Portrait styles: Polaroid, Film noir, cinematic, film noir, Anthotype art, dark synth, chiaroscuro, film negative, sfumato, ornamental watercolor, glichty art, neon noir, synthography, batik, grisaille, liquid chrome, faded photograph, digital pixilation, etching, double exposure, long exposure,  ..

or

• Film Styles (Filmrollen)
  • Black and White
  • Color

or

• Art Styles: chalk, drypoint, graphite, black and white, monochrome, etching

• Axis: front view, side/profile view, back view/from behind, three quarter, top view, candid angle
• Angle: aerial view, top-down, high angle, eye level, low angle, ground level
• Pose: thinking, touching face, hands on cheek, over-the-shoulder, accentuating the jawline, lying down, elbow on table, flipping hear,
• Crop: full body, medium full, medium, medium close-up, close-up, tight headsot, extrem close-up, eyecut, extreme/macro closeup, ...

• Emotion and Facial Expressions/Body Posture:
  • candid expression, joy, sadness, anger, fear, surprise, love, shame, anxiety
  • Moods: serene, joyful, dreamy, brooding, gloomy, nostalgic, solemn, romantic, mysterious, whimsical, energetic, resilient, intense, contemplative, chaotic, ...
• Gaze:
  • eye contact to camera,  direct gaze, darting gaze, unfocused gaze, reflective gaze, gazing into distance, looking at the sky
  • looking up, down, sideways

• Eyes, eyelashes and eyebrows:  captering the unique features / highlighting their unique characters
  • sharp focus on eyes/tack-sharp eyes, centre the dominant eye
  • catchlights = light reflections/sparkles, eyes sparkling
  • long, natural, curling eyelashes
  • flecks and striations
  • deep-set, sagging eyelids, furrowed eyebrows
• Lips
  • full, thin, cupid's bow, droopy lips
• Skin:
  • smooth, dry sking, porcelain, oily skin
  • pale, white, dark, olive, rosy
  • uneven-toned, even-toned / with nuances of skin tones
  • with/ without  makeup
• Makeup
  • natural, glamorous, nude makeup, vintage-inspired , matte makeup, edgy and dramatic, neon, fairy-like, sun kissed, gothic, glittern

• Light:
  • sources: sunlight/natural light, softbox, ring light, natural window light, candle light, colored gel light, neon,...
  • effects:
    • natural, golden/blue hour
    • dramatic, contrasty, artifical lighting
    • back, bottom, side,
    • cinematic, rim, softbox
    • bokeh lights, starbust effect, volumetric/god rays, fog glow
    • Tungsten, Rembrandt, Loop, Chiaroscuro, underlighting
• Depth
  • shallow depth of field
• Shadows: creative use of shadows
  • Form/shape/silhoutte/geometric/playful
  • Size/depth/distortion: long, short, distorted
  • Intensitiy: strong, soft, opaque, shimmering
  • Color/temperature: colored, monochrome, cold, warm
  • Angle: low, medium, high
  • Direction: up, down, across, diagonal, parallel
  • Patterns
    • on the subject
    • in the background
    • effects: dappled, lattice, rippled, fractal, gemetric, organic, textured, distorted, motion blurred, halo, cross-hatched, color-filtered
  • Optical reflection: glass, puddle,  mirror, car window
  • shadow effects: projected, framed, vignette, dynamic, ...

• Background
  • blurred, natural background, bokeh, wall, murals, grass, curtains, sky, simple and clean, water,...
• Color
  • black and white, monochrome, pastel, iridescent, neutral, vibrant, romantic, intense, ..
  • LUTs (look up tables)
    • Cinematic Orange and Teal LUT
    • Moody Blue LUT
    • Cyberpunk LUT
    • Breaking Bad Flashba
• Preps:
  • scarf, mirror, chairs, musical instruments, books, hats, sunglasses, flowers, umbrellas, mirrors, balloons, lanterns, smoke, ...

• Camera
  • type:
    • instant camera / Polaroid Camera
    • Hasselblad H6D (strong focus, deep shadows)
    • Sony FE 85mm f/1.4 GM Lens
    • Panasonic Lumix G Leica DG Nocticron 42.5mm f/1.2 Lens
    • Nikon AF-S DX NIKKOR 35mm f/1.8G Lens
    • GoPro action camera
  • lense:
    • deep focus, shallow focus
    • fisheye, pinhole, vintage, wide angle, vintage lens
• Composition
  • dynamic, balanced, symmetrical, negative space, L-arrangement, leading lines, rule of thirds,...
• Naturalism
  • Blemishes/Imperfections: freckels, wrinkles, visable pores, bruising, 
  • Motion blur
  • soft film grain
  • lens flare

• Parameters
  • --ar  3:4 / 4:3
  • --style raw
  • --q 2