Place a real person (or object) into a real photograph so it looks like they were there. Use whenever someone asks to "put me in this photo", "add this person to this scene", "composite these two images", "make it look like I was at this event", "insert this product into this room", or supplies a portrait plus a background photo and wants them merged. Covers the four geometry failures that ruin composites — floating subject, missing shadow, wrong scale, cropped head — with the exact prompt clauses that prevent each. Also covers aspect-ratio matching, reference-image order, and EXIF orientation. NOT for generating a scene from scratch with no reference photo (that is plain…