At bubble size the face is roughly 120 pixels across. This is the one frame where the prompt-only route is genuinely sufficient, which is why gaming accounts get away with so much.
The recipe
The shot never describes the person. It describes what is happening to them, which is what keeps the face out of the variables.
Getting it right
Composed
The locked line comes from the character sheet; everything after it comes from the recipe above. Swap in your own line and nothing else changes.
Midjourney
Small circular webcam frame of a man, early twenties, Eastern European features, a long face with a high forehead, pale grey hooded eyes, thin tapered brows, an aquiline nose, a thinner upper lip, a small vertical scar through the left eyebrow, ear-length straight platinum blonde hair with a curtain fringe, porcelain skin, a matte finish, tall with a slight build. Wearing oversized streetwear, a monochrome palette of black, white and grey, in a desk setup lit by monitor light, coloured neon spill, camera at eye level. Head only, tightly cropped to a circle, low-fidelity webcam look. Reacting rather than presenting, eyes moving to something off-frame. Slightly soft, compressed, lit by screen glow --ar 9:16 --style raw --seed 1459647266 --cref [url of your approved reference frame] --cw 100
Flux
Small circular webcam frame of a man, early twenties, Eastern European features, a long face with a high forehead, pale grey hooded eyes, thin tapered brows, an aquiline nose, a thinner upper lip, a small vertical scar through the left eyebrow, ear-length straight platinum blonde hair with a curtain fringe, porcelain skin, a matte finish, tall with a slight build. Wearing oversized streetwear, a monochrome palette of black, white and grey, in a desk setup lit by monitor light, coloured neon spill, camera at eye level. Head only, tightly cropped to a circle, low-fidelity webcam look. Reacting rather than presenting, eyes moving to something off-frame. Slightly soft, compressed, lit by screen glow negative: beauty filter, airbrushed skin, plastic skin, waxy skin, over-smoothed, perfectly symmetrical face, extra fingers, malformed hands, warped jewellery, text artifacts, watermark, logo on clothing, duplicate person, changing facial structure, unblemished brow, oily highlight seed: 1459647266 | guidance: 3.5 | steps: 28
Seedream
Small circular webcam frame of a man, early twenties, Eastern European features, a long face with a high forehead, pale grey hooded eyes, thin tapered brows, an aquiline nose, a thinner upper lip, a small vertical scar through the left eyebrow, ear-length straight platinum blonde hair with a curtain fringe, porcelain skin, a matte finish, tall with a slight build. Wearing oversized streetwear, a monochrome palette of black, white and grey, in a desk setup lit by monitor light, coloured neon spill, camera at eye level. Head only, tightly cropped to a circle, low-fidelity webcam look. Reacting rather than presenting, eyes moving to something off-frame. Slightly soft, compressed, lit by screen glow Keep identical: a man, early twenties, Eastern European features, a long face with a high forehead, pale grey hooded eyes, thin tapered brows, an aquiline nose, a thinner upper lip, a small vertical scar through the left eyebrow, ear-length straight platinum blonde hair with a curtain fringe, porcelain skin, a matte finish, tall with a slight build Change only: [the one thing that changes in this shot]
Used by
Talking head
Chest up, dead centre, phone at eye height
Chest up, offset to the right third, camera at eye height
Seated, waist up, camera slightly above eye height
Three-quarter body, standing beside a whiteboard that fills the right half of frame
Chest up behind a counter, camera at chest height looking slightly up