Replace the background of my photo with a modern office interior, thrown well out of focus behind me. Match the new background's light to the light already on me: same direction, same colour temperature, same softness. Add a believable contact shadow and a little ambient bounce so I am sitting in the scene rather than pasted onto it. Clean edge through my hair. Do not change my face, clothing or pose. The result must read as a real photograph: natural skin texture with visible pores, believable light direction and shadow falloff, correct anatomy and hands.
“Use it” opens the editor with this prompt already loaded — add your photo and generate. Copy works anywhere else: ChatGPT, Gemini, Midjourney.
Matching the light is what makes a composite work. Mismatched light is why most look fake.