Minimalist Corporate Portrait Sprite Sheet

Create a single 3x3 sprite sheet image containing image_count different simple bust portrait illustrations, matching a website_style style. White/off-white background for each cell, consistent navy blue hand-drawn line art, very light pastel clothing fills in clothing_colors. Subjects: mix of adult men and women, 20s to 60s, friendly neutral smiles, shoulders visible, centered in each cell with generous but even margins, no cropping, no text, no labels, no borders, no shadows. Each portrait should be easy to crop into a square or vertical avatar. Style should resemble clean minimalist line illustrations used for customer testimonials, warm, calm, professional, not cartoonish, no photorealism. High resolution, exactly 3 columns by 3 rows, consistent scale across all nine portraits.