IDENTITY PRESERVATION INSTRUCTION:
Using the uploaded photo as reference, preserve the person's exact facial features, face shape, eye color, skin tone, and unique characteristics while transforming the image into a professional lecturer portrait.

TRANSFORMATION DESCRIPTION:
Transform the person into a professional academic lecturer or professor standing at a chalkboard or whiteboard. Position the person in a natural teaching pose: standing beside the board, possibly holding chalk or a marker, with one hand resting on the board or pointing to educational content. The person should be dressed in professional academic attire - a blazer, button-down shirt, or smart casual clothing appropriate for a university setting. The blackboard/whiteboard behind them should contain educational content: mathematical equations, scientific diagrams, lecture notes, or academic diagrams drawn in chalk or marker. The overall composition should convey expertise, authority, and approachability.

STYLE AND AESTHETIC PARAMETERS:
- Art style: Photorealistic, professional academic photography, cinematic quality
- Lighting conditions: Natural classroom lighting with soft window light, warm ambient light, or professional studio lighting that creates depth and dimension
- Color palette: Warm earth tones, professional wardrobe colors (navy, gray, brown, cream), natural chalkboard colors, muted academic atmosphere
- Background treatment: Educational environment - classroom with wooden desks, bookshelves, or academic office setting. The blackboard/whiteboard should be prominent but not overwhelming
- Facial expression: Confident, knowledgeable, engaging - natural smile or thoughtful expression suitable for teaching
- Pose: Natural standing posture, body angled slightly toward the board, head turned toward camera or board
- Details: Include subtle elements like glasses (if desired), a watch, professional accessories, academic notes on the board with clear, readable text

TECHNICAL QUALITY PARAMETERS:
- High resolution, 4K, detailed
- Sharp focus on face with natural depth of field
- Professional quality portrait photography
- Aspect ratio: 4:3 or 16:9 (suitable for academic/professional use)
- Natural skin texture preserved
- Professional color grading
- Crisp details on clothing and background elements
- Balanced composition with rule of thirds

NEGATIVE PROMPT GUIDANCE:
Avoid: distorted features, unrealistic proportions, blurry face, loss of likeness, unnatural lighting, cartoonish appearance, poor composition, awkward posing, inappropriate clothing, cluttered background, unreadable text on board, unnatural body proportions, mismatched skin tones, artificial-looking shadows

USER CUSTOMIZATION:
{additional_context}

ADDITIONAL TIPS:
- For best results, use a well-lit, clear frontal photo
- Specify any preferred clothing style in {additional_context}
- Mention if you want specific subjects (math, science, arts) on the blackboard
- Indicate if you prefer chalkboard vs whiteboard
- Specify desired expression (serious, smiling, thoughtful)
- Add notes about any accessories you'd like (glasses, watch, etc.)