GPT Image 2 flat vector portrait illustration prompt

Create a clean, modern flat vector portrait illustration of the same person in the reference image. Preserve the exact facial features, face shape, expression, black round eyeglasses, and overall hairstyle. Use natural jet-black hair with realistic highlights and texture, styled exactly like the reference - thick, voluminous, slightly messy, and swept upward. Make the beard full, neatly trimmed, and natural black. Dress the person in a plain black crew-neck T-shirt. Replace the background with a solid vibrant green (#2E7D32 or similar). Use smooth gradients, crisp edges, minimal shadows, and a professional Adobe Illustrator/Dribbble-style vector aesthetic. Center the portrait, front-facing, symmetrical composition, shoulders visible, high detail, clean lines, high resolution (4K), with no text, logos, watermarks, or extra objects.